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1 1 CS304 Final Term Solved MCQs Mega File (Latest All in One) User can make virtual table explicitly. True False In order to define a class template the first line of definition must be: template <typename T> typename <template T> Template Class <ClassName> Class <Template T> Consider the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options In c++ dynamic binding and polymorphism will be achieved when member function will be. virtual inline In type in depended function template should be use where code and behavior must be identical. True False Consider the code below, class class1{ protected: int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options In specialization we can, Replace child class with its base class Replace base class with its child class (Not Sure) Replace both child and base classes interchangeably None of the given options Consider the code below, class class1{ : void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options It is illegal to make objects of one class members of another class. True False An abstract class is useful when no classes should be derived from it. there are multiple paths from one derived class to another.

2 2 no objects should be instantiated from its. you want to defer the declaration of the class. In resolution order compiler search firstly. Generic Template Partial Specialization Complete Specialization Ordinary function template<> class Vector{ void** p; //... void*& operator[] ((int i); }; This specialization can then be used as the common implementation for all Vectors of pointers. This specialization can then be used as the all type implementation for one type classes. This specialization can then be used double type pointers. This specialization should be used for Vectors of all type int types. In inheritance derived class pointer can be assigned to base class pointer in. Main function In derived class member and friend functions In base class member and friend functions None of the given options Which statement will be true for concrete class? it implements an virtual concept. it can be instantiated it cannot be instantiated none of given The Specialization pattern after the name says that this specialization is to be used for every. data types meta types virtual types pointers type c++ dynamic binding and polymorphism will be achieved when member function will be. virtual inline Consider the code below, class class1{ protected: void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options Consider the code below, class class1{ protected: int i; }; class class2 : protected class1 { }; Then int member i of class1 is in class2, protected none of the given options Consider the code below, class class1{ : void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2,

3 3 protected none of the given options Consider the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options Consider the code below, class class1{ : int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options If there is a pointer, p, to objects of a base class, and it contains the address of an object of a derived class, and both classes contain a virtual member function, ding(), then the statement p->ding(); will cause the version of ding() in the class to be executed. base derived virtual implemented Derived class can inherit from base class as well as and protected base classes True False Two functions with same names, parameters and return type can exist in, Function overloading Function overriding Operator overloading None of these options Consider the code below, class class1{ : int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options Target of a function call is determined at run time. instance virtual operator none of given A function call is resolved at run-time in non-virtual member function virtual member function Both non-virtual member and virtual member function. None of given

4 4 Consider the code below, class class1{ : int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options Consider the code below, class c1{ }; class c2 : c1 { }; class c3 : c2 { }; Then c1 is, Direct base class of c3 Direct child class of c3 Direct base class of c2 Direct child class of c2 A class can inherit from more then one class is called. Simple inheritance Multiple inheritances Single inheritance Double inheritance template<> class Vector{ void** p; //... void*& operator[] ((int i); }; This specialization can then be used as the common implimentation for all Vectors of pointers. This spcialization can then be used as the all type implimentation for one type classes. This specialization can then be used double type pointers. This specialization should be used for Vectors of all type int types. Consider the code below, class class1{ : int i; }; class class2 : protected class1 { }; Then int member i of class1 is in class2, protected none of the given options Consider the code below, class class1{ : void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options Templates automatically create different versions of a function, depending on user input. True False Binding means that target function for a call is selected at run time Automatic Dynamic Static Dramatic When we create objects, then space is allocated to: Member function Access specifier Data member None of given

5 5 There is only one form of copy constructor. True False Which of the following features of OOP is used to deal with only relevant details? Abstraction Information hiding Object Binding means that targets function for a call is selected at compile time. Static Dynamic Automatic None of given In C++, we declare a function virtual by preceding the function header with keyword Inline. True False It is illegal to make objects of one class members of another class. True False In Resolution order compiler search firstly. Generic Template Partial Specification Complete Specification Ordinary function Derived class can inherit from base class as well as and protected base classes True False Which line will produce error. Class phone: Private Transmit, Receiver { } 1.int main () 2. { 3.phone obj; 4.Tranmit*obj1 = &obj; 5.Received obj2 = &obj; 6.} 3 rd line will produce error 4th line will produce error 3 rd and 4 th line will produce error. 5 th line will produce error. Methodologies to the development of reusable software relate to. Structure programming Procedural programming Generic programming None of the given A template argument is preceded by the keyword. Vector Class Template Type* Friends are used exactly the same for template and non-template classes. True False

6 6 A function template must have a parameter True False Child class can call constructor of its, Direct base class Indirect base class Both direct and indirect base classes None of these. Which statement will be true for concrete class? It implements an virtual concept. It can be instantiated It cannot be instantiated None of given A class D can be derived from a class C, which is derived froma class B, which is derived from a class A True False Adding a derived class to a base class requires fundamental changes to the base class. True False A Class or class template can have member that are themselves templates. Variable Function Objects None of given Which will be the Primary task or tasks of generic programming? Categorize the abstractions in a domain into concepts Implement generic algorithms based on the concepts Build concrete models of the concepts All of given The default inheritance mode is, Public inheritance Protected Inheritance Private Inheritance None of these options If there is a pointer, p, to objects of a base class, and it contains the address of an object of a derived class, and both classes contain a virtual member function, ding(), then the statement p->ding(); will cause the version of ding() in the class to be executed. Base Derived Virtual Implemented Child class can call constructor of its, Direct base class Indirect base class

7 7 Both direct and indirect base classes None of these A pure virtual function is a virtual function that causes its class to be abstract. returns nothing. is used in a derived class. takes no arguments. Two functions with same names, parameters and return type can exist in, Function overloading Function overriding Operator overloading None of these options Adding a derived class to a base class requires fundamental changes to the base class. True FALSE User can make virtual table explicitly. TRUE False Consider the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options Consider the code below, class class1{ : void func1(); }; class class2 : protected class1 { }; Function func1 of class1 is in class2, protected none of the given options Consider the code below, class c1{ }; class c2 : c1 { }; class c3 : c2 { }; Then c2 is, Direct base class of c3 Direct child class of c3 Direct base class of c1 None of these Class is not a mechanism to create objects and define user data types. true false Memory is allocated to non static members only, when: 1. Class is created 2. Object is defined 3. Object is initialized 4. Object is created The sub-object s life is not dependent on the life of master class in. 1. Composition 2. Aggregation

8 8 3. Separation 4. non of the given Unary operators and assignment operator are right associative. 1. true 2. false The >= operator can't be overloaded. 1. true 2. false is creating objects of one class inside another class. 1. Association 2. Composition 3. Aggregation 4. Inheritance If we are create array of objects through new operator, then 1. We can call overloaded constructor through new 2. We can t call overloaded constructor through new 3. We can call default constructor through new 4. None of the given Object can be declared constant with the use of Constant keyword. 1. true 2. false Operator will take only one operand. 1. New 2. int 3. object 4. none of the given Which of the following operator(s) take(s) one or no argument if overloaded? * 3. % 4. All of the given choices this pointer does not pass implicitly to functions. 1. Static Member 2. Non-Static Member 3. Instance Number 4. None of the given Operator overloading is 1. making C++ operators work with objects. 2. giving C++ operators more than they can handle. 3. giving new meanings to existing Class members. 4. making new C++ operators Question # 1 of 10 Information hiding can be achieved through. 1. Encapsulation, Inheritance 2. Encapsulation, Polymorphism 3. Encapsulation, Abstraction 4. Overloading Question # 2 of 10 ( Start time: 01:11:21 AM ) Total M a r k s: 1 A good model is... related to a real life problem. 1. Loosely 2. Openly

9 9 3. Closely Question # 3 of 10 ( Start time: 01:12:33 AM ) Total M a r k s: 1 Which of the following features of OOP is used to derive a class from another? 1. Encapsulation 2. Polymorphism 3. Data hiding 4. Inheritance Question # 4 of 10 ( Start time: 01:13:51 AM ) Total M a r k s: 1 Which of the following is a weak relationship between two objects? 1. Inheritance 2. Composition 3. Aggregation 4. None of given Question # 5 of 10 ( Start time: 01:14:56 AM ) Total M a r k s: 1 Data items in a class must be. 1. True 2. False Question # 6 of 10 ( Start time: 01:15:52 AM ) Total M a r k s: 1 Which one is a class association 1. Simple Association 2. Inheritance 3. Composition 4. Aggregation Question # 7 of 10 ( Start time: 01:16:55 AM ) Total M a r k s: 1 Suppose there is an object of type Person, which of the following can be considered as one of its attributes 1. Name 2. Age 3. Work() 4. Both Name and Age Question # 8 of 10 ( Start time: 01:17:52 AM ) Total M a r k s: 1 Which one is not an object association? 1. Simple association 2. Inheritance 3. Aggregation 4. Association Question # 9 of 10 ( Start time: 01:18:50 AM ) Total M a r k s: 1 Using encapsulation we can achieve 1. Information hiding 2. Least interdependencies among modules 3. Implementation independence 4. All of given options Question # 10 of 10 ( Start time: 01:19:43 AM ) Total M a r k s: 1 In constant member function the type of this pointer is: 1. Constant pointer 2. Constant pointer to object 3. Constant pointer to class 4. Constant pointer to constant object Question # 1 of 10

10 10 Which of the following is the way to extract common behavior and attributes from the given classes and make a separate class of those common behaviors and attributes? 1. Generalization 2. Sub-typing 3. Specialization 4. Extension Question # 2 of 10 The ability to derive a class from more than one class is called 1. Single inheritance 2. Encapsulation 3. Multiple inheritance 4. Polymorphism Question # 3 of 10: If MyClass has a destructor what is the destructor named? 1. MyClass 2. ~MyClass 3. My~Class 4. MyClass~ Question # 4 of 10: Class abc{ }; Is a valid class declaration? 1. yes 2. no Question # 5of 10: Without using Deep copy constructor, A problem can occur 1. System crash 2. Memory Leakage 3. Dangling pointer 4. All of the given Question # 6 of 10: If only one behaviour of a derived class is incompatible with base class, then it is: 1. Generalization 2. Specialization 3. Extension 4. Inheritance Question # 7 of 10: Which of the following may not be an integral part of an object? 1. state 2. behavior 3. Protected data members 4. All of given Question # 8 of 10: Only tangible things can be chosen as an object. 1. True 2. False A class hierarchy shows the same relationships as an organization chart. describes has a relationships. describes is a kind of relationships. shows the same relationships as a family tree. Sender of the message does not need to know the exact class of receiver in.

11 11 Abstraction Polymorphism Inheritance none of the given A function call is resolved at run-time in non-virtual member function virtual member function Both non-virtual member and virtual member function. None of given Adding a derived class to a base class requires fundamental changes to the base class. True False User can make virtual table explicitly. True False Binding means that target function for a call is selected at compile time. Static Dynamic Automatic None of given Which line will produce error. Class phone: Transmit, Receiver { } 1. int main() 2. { 3. phone obj; 4. Tranmit* obj1 = &obj; 5. Received obj2 = &obj; 6. } 3rd line will produce error 4th line will produce error 3rd and 4th line will produce error. 5th line will produce error Function overriding is done in context of, Single class Single derived class Single base class Derived and base classes the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options Methodologies to the development of reusable software relate to. Structure programming procedural programming

12 12 generic programming None of the given Virtual functions allow you to create an array of type pointer-to-base class that can hold pointers to derived classes. create functions that can never be accessed. group objects of different classes so they can all be accessed by the same function code. use the same function call to execute member functions of objects from different classes. User can make virtual table explicitly. True False In order to define a class template the first line of definition must be: template <typename T> typename <template T> Template Class <ClassName> Class <Template T> Consider the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options In c++ dynamic binding and polymorphism will be achieved when member function will be. virtual inline In type in depended function template should be use where code and behavior must be identical. True False Consider the code below, class class1{ protected: int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options In specialization we can, Replace child class with its base class Replace base class with its child class (Not Sure) Replace both child and base classes interchangeably None of the given options

13 13 Consider the code below, class class1{ : void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options It is illegal to make objects of one class members of another class. True False An abstract class is useful when no classes should be derived from it. there are multiple paths from one derived class to another. no objects should be instantiated from its. you want to defer the declaration of the class. In resolution order compiler search firstly. Generic Template Partial Specialization Complete Specialization Ordinary function template<> class Vector{ void** p; //... void*& operator[] ((int i); }; This specialization can then be used as the common implimentation for all Vectors of pointers. This spcialization can then be used as the all type implimentation for one type classes. This specialization can then be used double type pointers. This specialization should be used for Vectors of all type int types. In inheritance derived class pointer can be assigned to base class pointer in, Main function In derived class member and friend functions In base class member and friend functions None of the given options Which statement will be true for concrete class? it implements an virtual concept. it can be instantiated it cannot be instantiated none of given The Specialization pattern after the name says that this specialization is to be used for every. data types meta types virtual types pointers type

14 14 c++ dynamic binding and polymorphism will be achieved when member function will be. virtual inline Consider the code below, class class1{ protected: void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options Consider the code below, class class1{ protected: int i; }; class class2 : protected class1 { }; Then int member i of class1 is in class2, protected none of the given options Consider the code below, class class1{ : void func1(); }; class class2 : class1 { }; Function func1 of class1 is in class2, protected none of the given options Consider the following statements: 1) int iarray[5]; 2) int *parr = iarray; These statements will compile successfully Error in first statement Error in second statement None of given options Consider the code below, class class1{ : int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options If there is a pointer, p, to objects of a base class, and it contains the address of an object of a derived class, and both classes contain a virtual member function, ding(), then the statement p->ding(); will cause the version of ding() in the class to be executed. base derived virtual implemented Derived class can inherit from base class as well as and protected base classes

15 15 True False Two functions with same names, parameters and return type can exist in, Function overloading Function overriding Operator overloading None of these options Consider the code below, class class1{ : int i; }; class class2 : class1 { }; Then int member i of class1 is in class2, protected none of the given options A function call is resolved at run-time in non-virtual member function virtual member function Both non-virtual member and virtual member function. None of given Question No: 1 ( Marks: 1 ) - Please choose one Which of the following causes run time binding? Declaring object of abstract class Declaring pointer of abstract class Declaring overridden methods as non-virtual None of the given Question No: 2 ( Marks: 1 ) - Please choose one Which of the following is the best approach if it is required to have more than one functions having exactly same functionality and implemented on different data types? Templates Overloading Data hiding Encapsulation Question No: 3 ( Marks: 1 ) - Please choose one A copy constructor is invoked when a function do not returns by value. an argument is passed by value. a function returns by reference. an argument is passed by reference. Question No: 4 ( Marks: 1 ) - Please choose one Like template functions, a class template may not handle all the types successfully. True False Question No: 6 ( Marks: 1 ) - Please choose one A class template may inherit from another class template. True False Question No: 7 ( Marks: 1 ) - Please choose one By default the vector data items are initialized to 0 0.0

16 16 1 null Question No: 8 ( Marks: 1 ) - Please choose one In Private only member functions and friend classes or functions of a derived class can convert pointer or reference of derived object to that of parent object specialization inheritance abstraction composition Question No: 9 ( Marks: 1 ) - Please choose one Which of the following is/are advantage[s] of generic programming? Reusability Writability Maintainability All of given Question No: 10 ( Marks: 1 ) - Please choose one Template functions use than ordinary functions. Greater Memory Lesser Memory Equal Memory None of the given options Question No: 11 ( Marks: 1 ) - Please choose one Non Template Friend functions of a class are friends of instance/s of that class. All One specific All instances of one date type None of the given options Question No: 12 ( Marks: 1 ) - Please choose one A copy constructor is invoked when a function do not returns by value. an argument is passed by value. a function returns by reference. an argument is passed by reference. Question No: 13 ( Marks: 1 ) - Please choose one A pointer to a base class can point to objects of a derived class. True False Question No: 14 ( Marks: 1 ) - Please choose one A template argument is preceded by the keyword. vector class template type* Question No: 15 ( Marks: 1 ) - Please choose one Which one of the following terms must relate to polymorphism? Static allocation Static typing Dynamic binding Dynamic allocation Question No: 16 ( Marks: 1 ) - Please choose one Multiple inheritance can be of type

17 17 Public Private Protected All of the given Question No: 17 ( Marks: 1 ) - Please choose one Assume a class Derv that is ly derived from class Base. An object of class Derv located in main() can access members of Derv. protected members of Derv. members of Derv. protected members of Base. Question No: 18 ( Marks: 1 ) - Please choose one A copy constructor is invoked when a function do not returns by value. an argument is passed by value. a function returns by reference. an argument is passed by reference. Question No: 19 ( Marks: 1 ) - Please choose one A function call is resolved at run-time in non-virtual member function. virtual member function. Both non-virtual member and virtual member function. None of given Question No: 20 ( Marks: 1 ) - Please choose one Two important STL associative containers are and. set,map sequence,mapping setmet,multipule sit,mat Question No: 21 ( Marks: 1 ) An abstract class is useful when, - Please choose one We do not derive any class from it. There are multiple paths from one derived class to another. We do not want to instantiate its object. You want to defer the declaration of the class. Question No: 22 ( Marks: 1 ) - Please choose one Which of the following is/are advantage[s] of generic programming? Reusability Writability Maintainability All of given Question No: 23 ( Marks: 1 ) - Please choose one By default the vector data items are initialized to null Question No: 24 ( Marks: 1 ) - Please choose one Suppose you create an uninitialized vector as follows: vector<int> evec; After adding the statment, evec.push_back(21); what will happen?

18 18 The following statement will add an element to the start (the back) of evec and will initialize it with the value 21. The following statement will add an element to the center of evec and will reinitialize it with the value 21. The following statement will delete an element to the end (the back) of evec and will reinitialize it with the value 21. The following statement will add an element to the end (the back) of evec and initialize it with the value 21. Question No: 25 ( Marks: 1 ) - Please choose one Default constructor is such constructor which either has no or if it has some parameters these have values Parameter, temporary Null, Parameter Parameter, default non of the given Question No: 28 ( Marks: 1 ) Classes like TwoDimensionalShape and ThreeDimensionalShape would normally be concrete, while classes like Sphere and Cube would normally be abstract. True False Question No: 29 ( Marks: 1 ) In order to define a class template, the first line of definition must be: template <typename T> typename <template T> Template Class <ClassName> Class <Template T> Question No: 30 ( Marks: 1 ) In case of multiple inheritance a derived class inherits, Only the member functions of its base classes Only the data members of its base classes Both data members and member functions of all its base classes Data members and member functions of any two base classes Question No: 1 ( Marks: 1 ) - Please choose one A template provides a convenient way to make a family of variables and data members functions and classes classes and exceptions programs and algorithms Question No: 2 ( Marks: 1 ) - Please choose one Which one of the following terms must relate to polymorphism? Static allocation Static typing Dynamic binding Dynamic allocation Question No: 3 ( Marks: 1 ) - Please choose one What is true about function templates? The compiler generates only one copy of the function template The compiler generates a copy of function respective to each type of data The compiler can only generate copy for the int type data None of the given. Question No: 5 ( Marks: 1 ) - Please choose one template <> class Vector<char*> { } This is an example of partial specialization. True

19 19 False Question No: 7 ( Marks: 1 ) - Please choose one A non-virtual member function is defined in a base class and overridden in a derived class; if that function is called through a base-class pointer to a derived class object, the derived-class version is used. True False Question No: 8 ( Marks: 1 ) - Please choose one Assume a class Derv that is ly derived from class Base. An object of class Derv located in main() can access members of Derv. protected members of Derv. members of Derv. protected members of Base. Question No: 9 ( Marks: 1 ) - Please choose one In order to define a class template, the first line of definition must be: template <typename T> typename <template T> Template Class <ClassName> Class <Template T> Question No: 10 ( Marks: 1 ) - Please choose one If there is a pointer p to objects of a base class, and it contains the address of an object of a derived class, and both classes contain a nonvirtual member function, ding(), then the statement p->ding(); will cause the version of ding() in the class to be executed. Base Derived Abstract virtual Question No: 11 ( Marks: 1 ) - Please choose one When the base class and the derived class have a member function with the same name, you must be more specific which function you want to call (using ). scope resolution operator dot operator null operator Operator overloading Question No: 12 ( Marks: 1 ) - Please choose one Non Template Friend functions of a class are friends of instance/s of that class. All One specific All instances of one date type None of the given options Question No: 13 ( Marks: 1 ) The find() algorithm - Please choose one finds matching sequences of elements in two containers. finds a container that matches a specified container. takes iterators as its first two arguments. takes container elements as its first two arguments. Question No: 14 ( Marks: 1 ) - Please choose one

20 20 If you define a vector v with the default constructor, and define another vector w with a one -argument constructor to a size of 11, and insert 3 elements into each of these vectors with push_back(), then the size() member function will return for v and for w. 11 for v and 3 for w. 0 for v and 0 for w. 0 for v and 3 for w. 3 for v and 11 for w. (100% Sure) Question No: 15 ( Marks: 1 ) - Please choose one Which of the following may not be an integral part of an object? State Behavior Protected data members All of given Question No: 16 ( Marks: 1 ) - Please choose one Which is not the Advantage of inheritance? providing class growth through natural selection. facilitating class libraries. avoiding the rewriting of code. providing a useful conceptual framework. Question No: 17 ( Marks: 1 ) - Please choose one class DocElement { : virtual void Print() { cout << "Generic element"; } }; class Heading : DocElement { : void Print() { cout << "Heading element"; } }; class Paragraph : DocElement { : void Print() { cout << "Paragraph element"; } }; void main() { DocElement * p = new Paragraph(); } p->print(); When you run this program, it will print out a single line to the console output. What will be in that line? Select one correct answer from the following list: Generic element Heading element Paragraph element Nothing will be printed. Question No: 18 ( Marks: 1 ) - Please choose one When a virtual function is called by referencing a specific object by name and using the dot member selection operator (e.g., squareobject.draw()), the reference is resolved at compile time. True False Question No: 19 ( Marks: 1 ) - Please choose one In case of multiple inheritance a derived class inherits,

21 21 Only the member functions of its base classes Only the data members of its base classes Both data members and member functions of all its base classes Data members and member functions of any two base classes Question No: 20 ( Marks: 1 ) - Please choose one When we write a class template the first line must be: template < class class_name> template < class data_type> template < class T > Here T can be replaced with any name but it is preferable. class class-name() class template<class_name> Question No: 21 ( Marks: 1 ) - Please choose one Which of the following is incorrect line regarding function template? template<class T> template <typename U> Class<template T> template < class T, class U> Question No: 22 ( Marks: 1 ) - Please choose one An STL container can not be used to, hold objects of class employee. store elements in a way that makes them quickly accessible. compile c++ programs. organize the way objects are stored in memory Question No: 23 ( Marks: 1 ) - Please choose one Algorithms can only be implemented using STL containers. True False Question No: 24 ( Marks: 1 ) - Please choose one Consider a class named Vehicle, which of the following can be the instance of class Vehicle? 1. Car 2. Computer 3. Desk 4. Ahmed 5. Bicycle 6. Truck 1, 4, 5 2, 5, 6 1, 2, 3, 6 1, 5, 6 Question No: 25 ( Marks: 1 ) Consider the code below, class Fred { : Fred();... }; int main() { Fred a[10]; Fred* p = new Fred[10];... } Select the best option, - Please choose one

22 22 Fred a[10]; calls the default constructor 09 times Fred* p = new Fred[10]; calls the default constructor 10 times Produce an error Fred a[10]; calls the default constructor 11 times Fred* p = new Fred[10]; calls the default constructor 11 times Fred a[10]; calls the default constructor 10 times Fred* p = new Fred[10]; calls the default constructor 10 times Question No: 26 ( Marks: 1 ) - Please choose one When a variable is define as static in a class then all object of this class, Have different copies of this variable Have same copy of this variable Can not access this variable None of given Question No: 27 ( Marks: 1 ) - Please choose one The life of sub object is dependant on the life of master class in. Separation Composition Aggregation None of the given Question No: 28 ( Marks: 1 ) - Please choose one, which means if A declares B as its friend it does NOT mean that A can access data of B. It only means that B can access all data of A. Friendship is one way only Friendship is two way only NO Friendship between classes Any kind of friendship Question No: 29 ( Marks: 1 ) - Please choose one Which of the following operators always takes no argument if overloaded? / FINALTERM EXAMINATION Spring 2010 CS304- Object Oriented Programming Question No: 1 ( Marks: 1 ) - Please choose one A template argument is preceded by the keyword. vector class template type* Ref No: Time: 90 min Marks: 58 Question No: 2 ( Marks: 1 ) - Please choose one Which of the following causes run time binding? Declaring object of abstract class Declaring pointer of abstract class Declaring overridden methods as non-virtual None of the given Question No: 3 ( Marks: 1 ) - Please choose one A function template can not be overloaded by another function template. True False

23 23 Question No: 4 ( Marks: 1 ) - Please choose one Which of the following is the best approach if it is required to have more than one functions having exactly same functionality and implemented on different data types? Templates Overloading Data hiding Encapsulation Question No: 5 ( Marks: 1 ) - Please choose one Identify the correct way of declaring an object of user defined template class A for char type members? A< char > obj; <char>a obj; A obj<char>; Obj <char> A; Question No: 6 ( Marks: 1 ) - Please choose one The user must define the operation of the copy constructor. True False Question No: 7 ( Marks: 1 ) - Please choose one Template functions use than ordinary functions. Greater Memory Lesser Memory Equal Memory None of the given options Question No: 8 ( Marks: 1 ) - Please choose one The find() algorithm finds matching sequences of elements in two containers. finds a container that matches a specified container. takes iterators as its first two arguments. takes container elements as its first two arguments. Question No: 9 ( Marks: 1 ) - Please choose one Compiler performs type checking to diagnose type errors, Static Dynamic Bound Unbound Question No: 10 ( Marks: 1 ) - Please choose one Which of the following is/are advantage[s] of generic programming? Reusability Writability Maintainability All of given Question No: 11 ( Marks: 1 ) - Please choose one Vectors contain contiguous elements stored as a[an]. variable array function datatype Question No: 12 ( Marks: 1 ) - Please choose one Suppose you create an uninitialized vector as follows: vector<int> evec; After adding the statment, evec.push_back(21); what will happen? The following statement will add an element to the start (the back) of evec and will initialize it with the value 21. The following statement will add an element to the center of evec and will reinitialize it with the value 21.

24 24 The following statement will delete an element to the end (the back) of evec and wil l reinitialize it with the value 21. The following statement will add an element to the end (the back) of evec and initialize it with the value 21. Question No: 13 ( Marks: 1 ) - Please choose one In a de-queue, (chose the best option) data can be quickly inserted or deleted at any arbitrary location. data can be inserted or deleted at any arbitrary location, but the process is relatively slow. data can not be quickly inserted or deleted at either end. data can be inserted or deleted at either end, but the process is relatively slow. Question No: 14 ( Marks: 1 ) - Please choose one Algorithms can only be implemented using STL containers. True False Question No: 15 ( Marks: 1 ) - Please choose one What is a class? A class is a section of computer memory containing objects. A class is a section of the hard disk reserved for object oriented programs A class is the part of an object that contains the variables. A class is a description of a kind of object. Question No: 16 ( Marks: 1 ) - Please choose one Inheritance is a way to organize data. pass arguments to objects of classes. add features to existing classes without rewriting them. improve data-hiding and encapsulation. Question No: 17 ( Marks: 1 ) - Please choose one We can use "this" pointer in the constructor in the body and even in the initialization list of any class if we are careful, True False Question No: 18 ( Marks: 1 ) - Please choose one and methods may not be declared abstract.,static, static, none of given Question No: 19 ( Marks: 1 ) - Please choose one Default constructor is such constructor which either has no or if it has some parameters these have values Parameter, temporary Null, Parameter Parameter, default non of the given Question No: 20 ( Marks: 1 ) - Please choose one Public methods of base class can be accessed in its derived class directly inderectly simultaniously non of the given Question No: 21 ( Marks: 1 ) - Please choose one The type that is used to declare a reference or pointer is called its default type

25 25 static type abstract type reference type Question No: 22 ( Marks: 1 ) - Please choose one members are somewhere between and members. They are used in inheritance protected global Question No: 23 ( Marks: 1 ) - Please choose one Which of these are examples of error handling techniques? Abnormal Termination Graceful Termination Return the illegal all of the given Question No: 24 ( Marks: 1 ) - Please choose one follow try block to catch the object thrown catch block throw block main block non of the given Question No: 25 ( Marks: 1 ) - Please choose one Graphical representation of the classes and objects is called object model it shows Class Name only Class Name and attributes Relationships of the objects and classes all of the given Question No: 26 ( Marks: 1 ) - Please choose one Destructor can be overloaded True False OBJECT ORIENTED PROGRAMMING TYPICAL QUESTIONS & ANSWERS OBJECTIVE TYPE QUESTIONS Choose correct or the best alternative in the following: Q.1 The address of a variable temp of type float is (A) *temp (B) &temp (C) float& temp (D) float temp& Ans: B Q.2 What is the output of the following code char symbol[3]={ a, b, c }; for (int index=0; index<3; index++) cout << symbol [index];

26 26 (A) a b c (B) abc (C) abc (D) abc Ans: C Q.3 The process of building new classes from existing one is called. (A) Polymorphism (B) Structure (C) Inheritance (D) Cascading Ans: C Q.4 If a class C is derived from class B, which is derived from class A, all through inheritance, then a class C member function can access (A) protected and data only in C and B. (B) protected and data only in C. (C) data in A and B. (D) protected data in A and B. Ans: D Q.5 If the variable count exceeds 100, a single statement that prints Too many is (A) if (count<100) cout << Too many ; (B) if (count>100) cout >> Too many ; (C) if (count>100) cout << Too many ; (D) None of these. Ans: C Q.6 Usually a pure virtual function (A) has complete function body. (B) will never be called. (C) will be called only to delete an object. (D) is defined only in derived class. Ans: D Q.7 To perform stream I/O with disk files in C++, you should (A) open and close files as in procedural languages. (B) use classes derived from ios. (C) use C language library functions to read and write data. (D) include the IOSTREAM.H header file. Ans: B Q.8 Overloading the function operator (A) requires a class with an overloaded operator. (B) requires a class with an overloaded [ ] operator. (C) allows you to create objects that act syntactically like functions. (D) usually make use of a constructor that takes arguments. Ans: A Q.9 In C++, the range of signed integer type variable is (A) 0 to 216 (B) 2 to (C) 2 to (D) 8 0 to 2 Ans: B Q.10 If x 5, y 2 then x y equals. (where is a bitwise XOR operator)

27 27 (A) (B) (C) (D) Ans: A Q.11 If an array is declared as int a[4] = {3, 0, 1, 2}, then values assigned to a[0] & a[4] will be (A) 3, 2 (B) 0, 2 (C) 3, 0 (D) 0, 4 Ans: C Q.12 Mechanism of deriving a class from another derived class is known as (A) Polymorphism (B) Single Inheritance (C) Multilevel Inheritance (D) Message Passing Ans: C Q.13 RunTime Polymorphism is achieved by (A) friend function (B) virtual function (C) operator overloading (D) function overloading Ans: B Q.14 A function call mechanism that passes arguments to a function by passing a copy of the values of the arguments is (A) call by name (B) call by value (C) call by reference (D) call by value result Ans: B Q.15 In C++, dynamic memory allocation is accomplished with the operator (A) new (B) this (C) malloc( ) (D) delete Ans: A Q.16 If we create a file by ifstream, then the default mode of the file is (A) ios :: out (B) ios :: in (C) ios :: app (D) ios :: binary Ans: B Q.17 A variable defined within a block is visible (A) from the point of definition onward in the program. (B) from the point of definition onward in the function. (C) from the point of definition onward in the block. (D) throughout the function. Ans: C

28 28 Q.18 The break statement causes an exit (A) from the innermost loop only. (B) only from the innermost switch. (C) from all loops & switches. (D) from the innermost loop or switch. Ans: D Q.19 Which of the following cannot be legitimately passed to a function (A) A constant. (B) A variable. (C) A structure. (D) A header file. Ans: D Q.20 A property which is not true for classes is that they (A) are removed from memory when not in use. (B) permit data to be hidden from other classes. (C) bring together all aspects of an entity in one place. (D) Can closely model objects in the real world. Ans: C Q.21 You can read input that consists of multiple lines of text using (A) the normal cout << combination. (B) the cin.get( ) function with one argument. (C) the cin.get( ) function with two arguments. (D) the cin.get( ) function with three arguments. Ans: C Q.22 The keyword friend does not appear in (A) the class allowing access to another class. (B) the class desiring access to another class. (C) the section of a class. (D) the section of a class. Ans: C Q.23 The process of building new classes from existing one is called (A) Structure. (B) Inheritance. (C) Polymorphism. (D) Template. Ans: B Q.24 If you wanted to sort many large objects or structures, it would be most efficient to (A) place them in an array & sort the array. (B) place pointers to them in an array & sort the array. (C) place them in a linked list and sort the linked list. (D) place references to them in an array and sort the array. Ans: C Q.25 Which statement gets affected when i++ is changed to ++i? (A) i = 20; i++; (B) for (i = 0; i<20; i++) { } (C) a = i++; (D) while (i++ = 20) cout <<i; Ans: A Q.26 A friend function to a class, C cannot access

29 29 (A) data members and member functions. (B) data members and member functions. (C) protected data members and member functions. (D) the data members of the derived class of C. Ans: D Q.27 The operator that cannot be overloaded is (A) ++ (B) :: (C) ( ) (D) ~ Ans: B Q.28 A struct is the same as a class except that (A) there are no member functions. (B) all members are. (C) cannot be used in inheritance hierarchy. (D) it does have a this pointer. Ans: C Q.29 Pure virtual functions (A) have to be redefined in the inherited class. (B) cannot have access specification. (C) are mandatory for a virtual class. (D) None of the above. Ans: A Q.30 Additional information sent when an exception is thrown may be placed in (A) the throw keyword. (B) the function that caused the error. (C) the catch block. (D) an object of the exception class. Ans: C Q.31 Use of virtual functions implies (A) overloading. (B) overriding. (C) static binding. (D) dynamic binding. Ans: D Q.32 this pointer (A) implicitly points to an object. (B) can be explicitly used in a class. (C) can be used to return an object. (D) All of the above. Ans: D Q.33 Within a switch statement (A) Continue can be used but Break cannot be used (B) Continue cannot be used but Break can be used (C) Both Continue and Break can be used (D) Neither Continue nor Break can be used Ans:B Q.34 Data members which are static (A) cannot be assigned a value

30 30 (B) can only be used in static functions (C) cannot be defined in a Union (D) can be accessed outside the class Ans:B Q.35 Which of the following is false for cin? (A) It represents standard input. (B) It is an object of istream class. (C) It is a class of which stream is an object. (D) Using cin the data can be read from user s terminal. Ans:C Q.36 It is possible to declare as a friend (A) a member function (B) a global function (C) a class (D) all of the above Ans:D Q.37 In multiple inheritance (A) the base classes must have only default constructors (B) cannot have virtual functions (C) can include virtual classes (D) None of the above. Ans:C Q.38 Declaration of a pointer reserves memory space (A) for the object. (B) for the pointer. (C) both for the object and the pointer. (D) none of these. Ans:B Q.39 for (; ;) (A) means the test which is done using some expression is always true (B) is not valid (C) will loop forever (D) should be written as for( ) Ans:C Q.40 The operator << when overloaded in a class (A) must be a member function (B) must be a non member function (C) can be both (A) & (B) above (D) cannot be overloaded Ans:C Q.41 A virtual class is the same as (A) an abstract class (B) a class with a virtual function (C) a base class (D) none of the above. Ans:D Q.42 Identify the operator that is NOT used with pointers (A) -> (B) & (C) *

31 31 (D) >> Ans:D Q.43 Consider the following statements char *ptr; ptr = hello ; cout << *ptr; What will be printed? (A) first letter (B) entire string (C) it is a syntax error (D) last letter Ans:A Q.44 In which case is it mandatory to provide a destructor in a class? (A) Almost in every class (B) Class for which two or more than two objects will be created (C) Class for which copy constructor is defined (D) Class whose objects will be created dynamically Ans:D Q.45 The members of a class, by default, are (A) (B) protected (C) (D) mandatory to specify Ans:C Q.46 Given a class named Book, which of the following is not a valid constructor? (A) Book ( ) { } (B) Book ( Book b) { } (C) Book ( Book &b) { } (D) Book (char* author, char* title) { } Ans:B Q47 Which of the statements is true in a protected derivation of a derived class from a base class? (A) Private members of the base class become protected members of the derived class (B) Protected members of the base class become members of the derived class (C) Public members of the base class become protected members of the derived class (D) Protected derivation does not affect and protected members of the derived class. Ans:C Q48 Which of the following statements is NOT valid about operator overloading? (A) Only existing operators can be overloaded. (B) Overloaded operator must have at least one operand of its class type. (C) The overloaded operators follow the syntax rules of the original operator. (D) none of the above. Ans:D Q.49 Exception handling is targeted at (A) Run-time error (B) Compile time error (C) Logical error (D) All of the above. Ans:A Q.50 A pointer to the base class can hold address of

32 32 (A) only base class object (B) only derived class object (C) base class object as well as derived class object (D) None of the above Ans:C Q.51 Function templates can accept (A) any type of parameters (B) only one parameter (C) only parameters of the basic type (D) only parameters of the derived type Ans:C Q.52 How many constructors can a class have? (A) 0 (B) 1 (C) 2 (D) any number Ans:D Q.53 The new operator (A) returns a pointer to the variable (B) creates a variable called new (C) obtains memory for a new variable (D) tells how much memory is available Ans:C Q.54 Consider the following statements: int x = 22,y=15; x = (x>y)? (x+y) : (x-y); What will be the value of x after executing these statements? (A) 22 (B) 37 (C) 7 (D) Error. Cannot be executed Ans:B Q.55 An exception is caused by (A) a hardware problem (B) a problem in the operating system (C) a syntax error (D) a run-time error Ans:D Q.56 A template class (A) is designed to be stored in different containers (B) works with different data types (C) generates objects which must be identical (D) generates classes with different numbers of member functions. Ans:B Q.57 Which of the following is the valid class declaration header for the derived class d with base classes b1 and b2? (A) class d : b1, b2 (B) class d : class b1, class b2 (C) class d : b1, b2 (D) class d : b1, b2

33 33 Ans:A Q.58 A library function exit() causes an exit from (A) the loop in which it occurs (B) the block in which it occurs (C) the function in which it occurs (D) the program in which it occurs Ans:D Q.59 RunTime polymorphism is achieved by (A) friend function (B) virtual function (C) operator overloading (D) function overloading Ans:B Q.60 Declaration of a pointer reserves memory space (A) for the object. (B) for the pointer. (C) both for the object and the pointer. (D) none of these. Ans:B Q.61 An array element is accessed using (A) a FIFO approach (B) an index number (C) the operator (D) a member name Ans:B Q.62 If there is a pointer p to object of a base class and it contains the address of an object of a derived class and both classes contain a virtual member function abc(), then the statement p->abc(); will cause the version of abc() in the class to be executed. (A) Base Class (B) Derived class (C) Produces compile time error (D) produces runtime error Ans:B Q.63 A pure virtual function is a virtual function that (A) has no body (B) returns nothing (C) is used in base class (D) both (A) and (C) Ans:D Q.64 A static function (A) should be called when an object is destroyed. (B) is closely connected with and individual object of a class. (C) can be called using the class name and function name. (D) is used when a dummy object must be created. Ans:C Q.65 We can output text to an object of class ostream using the insertion operator<< because

34 34 (A) the ostream class is a stream (B) the insertion operator works with all classes. (C) we are actually outputting to cout. (D) the insertion operator is overloaded in ostream. Ans:D Q.66 The statement f1.write((char*)&obj1, sizeof(obj1)); (A) writes the member function of obj1 to f1. (B) Writes the data in obj1 to f1. (C) Writes the member function and the data of obj1 to f1. (D) Writes the address of obj1 to f1. Ans:B Q.67 To convert from a user defined class to a basic type, you would most likely use. (A) A built-in conversion function. (B) A one-argument constructor. (C) A conversion function that s a member of the class. (D) An overloaded = operator. Ans:C Q.68 Which of the following is not the characteristic of constructor. (A) They should be declared in the section. (B) They do not have return type. (C) They can not be inherited. (D) They can be virtual. Ans:D Q.69 Name the header file to be included for the use of built in function isalnum() (A) string.h (B) process.h (C) ctype.h (D) dos.h Ans:C Q.70 What is the output of given code fragment? int f=1, i=2; while(++i<5) f*=i; cout<<f; (A) 12 (B) 24 (C) 6 (D) 3 Ans:A Q.71 A class defined within another class is: (A) Nested class (B) Inheritance (C) Containership (D) Encapsulation Ans:A Q.72 What will be the values of x, m and n after the execution of the following statements? int x, m, n; m = 10; n = 15; x = ++m + n++;

35 35 (A) x=25, m=10, n=15 (B) x=26, m=11, n=16 (C) x=27, m=11, n=16 (D) x=27, m=10, n=15 Ans:B Q.73 Which of the following will produce a value 10 if x = 9.7? (A) floor(x) (B) abs(x) (C) log(x) (D) ceil(x) Ans:D Q74 The major goal of inheritance in c++ is: (A) To facilitate the conversion of data types. (B) To help modular programming. (C) To extend the capabilities of a class. (D) To hide the details of base class. Ans:C Q.75 Consider the following class definitions: class a { }; class b: protected a { }; What happens when we try to compile this class? (A) Will not compile because class body of a is not defined. (B) Will not compile because class body of b is not defined. (C) Will not compile because class a is not inherited. (D) Will compile successfully. Ans:D Q.76 Which of the following expressions is illegal? (A) (B) (false && true) (C) bool (x) = (bool)10; (D) float y = 12.67; Ans:C Q.77 The actual source code for implementing a template function is created when (A) The declaration of function appears. (B) The function is invoked. (C) The definition of the function appears. (D) None of the above. Ans:B Q.78 An exception is caused by (A) a runtime error. (B) a syntax error. (C) a problem in the operating system. (D)a hardware problem. Ans:A Q.79 Which of the following statements are true in c++? (A) Classes can not have data as members. (B) Structures can not have functions as members. (C) Class members are by default.

36 36 (D)None of these. Ans:B Q.80 What would be the output of the following program? int main() { int x,y=10,z=10; x = (y = =z); cout<<x; return 0; } (A) 1 (B) 0 (C) 10 (D) Error Ans:A Q.81 What is the error in the following code? class t { virtual void print(); } (A) No error. (B) Function print() should be declared as static. (C) Function print() should be defined. (D) Class t should contain data members. Ans:A Q.82 What will be the output of following program? #include<iostream.h> void main() { float x; x=(float)9/2; cout<<x; } (A) 4.5 (B) 4.0 (C) 4 (D) 5 Ans:A Q.83 A white space is : (A) blank space (B) new line (C) tab (D) all of the above Ans:D Q.84 The following can be declared as friend in a class (A) an object (B) a class (C) a data member (D) a data member Ans:B Q.85 What would be the output of the following? #include<iostream.h> void main() { char *ptr= abcd

37 37 char ch; ch = ++*ptr++; cout<<ch; } (A) a (B) b (C) c (D) d Ans:B Q.86 A copy constructor takes (A) no argument (B) one argument (C) two arguments (D) arbitrary no. of arguments Ans:B Q87 Overloading a postfix increment operator by means of a member function takes (A) no argument (B) one argument (C) two arguments (D) three arguments Ans:A Q88 Which of the following ways are legal to access a class data member using this pointer? (A) this.x (B) *this.x (C) *(this.x) (D) (*this).x Ans:D Q.89 If we store the address of a derived class object into a variable whose type is a pointer to the base class, then the object, when accessed using this pointer. (A) continues to act like a derived class object. (B) Continues to act like a derived class object if virtual functions are called. (C) Acts like a base class object. (D) Acts like a base class, if virtual functions are called. Ans:B Q.90 Which of the following declarations are illegal? (A) void *ptr; (B) char *str = hello ; (C) char str = hello ; (D) const *int p1; Ans:C Q.91 What will be the result of the expression 13 & 25? (A) 38 (B) 25 (C) 9 (D) 12 Ans:C Q.92 Which of the following operator can be overloaded through friend function? (A) ->

38 38 (B) = (C) ( ) (D) * Ans:D Q.93 To access the function fbase() in the base class, a statement in a derived class function fder() uses the statement.fbase(); (A) fbase(); (B) fder(); (C) base::fbase(); (D) der::fder(); Ans:A Q.94 If a base class destructor is not virtual, then (A) It can not have a function body. (B) It can not be called. (C) It can not be called when accessed from pointer. (D) Destructor in derived class can not be called when accessed through a pointer to the base class. Ans:D Q.95 Maximum number of template arguments in a function template is (A) one (B) two (C) three (D) many Ans:D Q 96 In access control in a protected derivation, visibility modes will change as follows: (A), and protected become protected (B) only becomes protected. (C) and protected become protected. (D) only becomes protected. Ans:C Q 97 Which of the following statement is valid? (A) We can create new C++ operators. (B) We can change the precedence of the C++ operators. (C) We can change the associativity of the C++ operators. (D) We can not change operator templates. Ans:D Q.98 What will be the output of the following program? #include<iostream.h> void main() { float x=5,y=2; int result; result=x % y; cout<<result; } (A) 1 (B) 1.0 (C) Error message (D) 2.5 Ans:C Q.99 Which can be passed as an argument to a function?

39 39 (A) constant (B) expression (C) another function (D) all of the above. Ans:A Q.100 Member functions, when defined within the class specification: (A) are always inline. (B) are not inline. (C) are inline by default, unless they are too big or too complicated. (D) are not inline by default. Ans:A Q.101 An STL algorithm is a). a standalone function that operate s on containers. b). a link between member functions and containers. c). a friend function of appropriate container classes. d). a member function of appropriate container classes. Q.102. The find() algorithm a). finds matching sequences of elements in two containers. b). finds a container that matches a specified container. c). takes iterators a s its first two arguments. d). takes container elements as its first two arguments. Q.103. Algorithms can be used only on STL containers. a). True b). False Q.104. A vector is an appropriate container if you a). want to insert lots of new elements at arbitrary locations in the vector. b). want to insert new elements, but always at the front of the container. c). are given an index number and you want to quickly access the corre sponding element. d). are given an element s key value and you want to quickly access the corresponding element. Q.105. In a deque() a. data can be quickly inserted or deleted at any arbitrary location. b. data can be inserted or deleted at any arbitrary location, but the process is relatively slow. c. data can be quickly inserted or deleted at either end. d. data can be inserted or deleted at either end, but the process is relatively slow. Q.106. In a set, the insert() member function inserts a key in sorted order. a) True b) False Q.107. To use a reverse_iterator, you should a. begin by initializing it to end(). b. begin by initializing it to rend(). c. increment it to move backward through the container.

40 40 d. decrement it to move backward through the container. X SONO SONO Group Team Disclaimer:- USE IT AT YOUR OWN RISK This file is just compiled by me so if you found any error or wrong answer in this file. Please feel free to me for correction and make this document 100% error free. sono.group.team@gmail.com Remember me in your Prayers You can join Facebook SONO Group Team VUMobile