2. Data Types. 1. Why doesn t the following code give the desired result? int x = 3000, y = 2000 ; long int z = x * y ;

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1 2. Data Types Week : 2 Duration : 60 mins 1. Why doesn t the following code give the desired result? int x = 3000, y = 2000 ; long int z = x * y ; 2. What is the Output of the code? int i; printf( %d, &i)+1; scanf( %d, i)-1; a) Runtime error. b) Runtime error. Access violation. c) Compile error. Illegal syntax d) None of the above 3. What is the output of the program? int i = 0xff ; printf( \n%d, i<<2); a) 4 b) 51 c) 1020 d) What will be the output of the program? int i, j; scanf( %d %d +scanf( %d %d, &i, &j)); printf( %d %d, i, j); a) Runtime error. b) 0, 0 c) Compile error d) the first two values entered by the user 5. How will you print % character? a) printf( \% ) b) printf( \\% ) c) printf( %% ) d) printf( \%% ) 9

2 6. What is the Output of the code? const int perplexed = 2; #defi ne perplexed 3 #ifdef perplexed #undef perplexed #defi ne perplexed 4 #endif printf( %d,perplexed); a) 0 b) 2 c) 4 d) none of the above 7. Output of the program will be: printf( %d, %d, sizeof( c ), sizeof(100)); a) 2, 2 b) 2, 100 c) 4, 100 d) 4, 4 8. Output of the code will be: int i = 100; printf( %d, sizeof(sizeof(i))); a) 2 b) 100 c) 4 d) none of the above 9. Predict the Output of the code: int c = 5; printf( %d, main c); a) 1 b) 5 c) 0 d) none of the above 10. Output of the program will be: char c; int i = 456; c = i; printf( %d, c); a) 456 b) -456 c) random number d) none of the above 10

3 11. Choose the Output of the program? void main () int x = 10; printf ( x = %d, y = %d, x,--x++); a) 10, 10 b) 10, 9 c) 10, 11 d) none of the above 12. Output of the program will be: int i =10, j = 20; printf( %d, %d,, j--, --i); printf( %d, %d, j++, ++i); a) 20, 10, 20, 10 b) 20, 9, 20, 10 c) 20, 9, 19, 10 d) 19, 9, 20, Find the Output of the program : int x=5; for(;x==0;x--) printf( x=%d\n, x--); a) 4, 3, 2, 1, 0 b) 1, 2, 3, 4, 5 c) 0, 1, 2, 3, 4 d) none of the above 14. Output of the program will be: int x=5; for(;x!=0;x--) printf( x=%d\n, x--); a) 5, 4, 3, 2,1 b) 4, 3, 2, 1, 0 c) 5, 3, 1 d) none of the above 11

4 15. Predict the Output of the program : int x=5; for(;x<= 0;x--) printf( x=%d, x--); a) 5, 3, 1 b) 5, 2, 1 c) 5, 3, 1, -1, 3 d) 3, -1, 1, 3, 5 16.Output of the program will be: unsigned int bit=256; printf( %d, bit); unsigned int bit=512; printf( %d, bit); a) 256, 256 b) 512, 512 c) 256, 512 d) Compile error 17. Find the Output of the program : int i; for(i=0;i<5;i++) printf( %d\n, 1L << i); a) 5, 4, 3, 2, 1 b) 0, 1, 2, 3, 4 c) 0, 1, 2, 4, 8 d) 1, 2, 4, 8, Choose the Output of the program : signed int bit=512, i=5; for(;i;i--) printf( %d\n, bit = (bit >> (i - (i -1)))); a) 512, 256, 128, 64, 32 b) 256, 128, 64, 32, 16 c) 128, 64, 32, 16, 8 d) 64, 32, 16, 8, 4 12

5 19. Output of the code will be: signed int bit=512, i=5; for(;i;i--) printf( %d\n, bit >> (i - (i -1))); a) 512, 256, 0, 0, 0 b) 256, 256, 0, 0, 0 c) 512, 512, 512, 512, 512 d) 256, 256, 256, 256, What is the Output of the program? signed int bit=512, mbit; mbit = ~bit; bit = bit & ~bit ; printf( %d %d, bit, mbit); a) 0, 0 b) 0, 513 c) 512, 0 d) 0, Assignment 21. What will be the output of the following program? main( ) unsigned int num ; int i ; printf ( \nenter any number ) ; scanf ( %u, &num ) ; for ( i = 0 ; i < 16 ; i++ ) printf ( %d, ( num << i & 1 << 15 )? 1 : 0 ) ; 22. What is the function of the -> operator? a) Shift bits to the left b) Shift bits to the right c) Access particular elements of a char array using the name of the array d) Access components of a structure using a pointer to the structure 23. True or false, if you keep incrementing a variable, it will become negative? a) True b) False c) It depends on the variable type 13

6 24. What is the equivalent of Pascal s Real? a) unsigned int b) char c) float 25. What is the maximum value of a unsigned char? a) 255 b) 256 c) What character terminates all character array strings a) \0 b). c) \END 27. What is the largest value an integer can hold in a Standard C compiler? a) b) c) d) INT_MAX 28. What will be the output of the following program? int a=1; int ab=4; int int b=3,a=2; printf( %i*/%i*/%*/i,a,b,ab); 29.What will do the following program? void extern int a; a=10; printf( %d,a); a) give linker error- a not defined b) print 10 c) give compiler error 30.Will compiler show any error? int a[10]; printf( %d,%d,a[0],a[12]); 31. sizeof () operator is used for a) data type b) data type & variable c) both d) none 14

7 32. What is the output of the following code? int s=5; printf( %d,s,s<<2,s>>2); 33. What is the output of the following code? #include<stdio.h> void int k=2,j=3,p=0; p=(k,j,k) printf( %d\n,p); a) 2 b) error c) 0 d) What is the output of the following code? #include<stdio.h> void unsigned int i= -1; printf( %d\n,i); printf( %u\n,i*-1); a) runtime error b) compilation error c) prints 1 to 1 d) prints 1 to What is the output of the following code? #include<stdio.h> void int k=10; k<<=1; printf( %d\n,k); a) 10 b)0 c) 20 d) compilation error 36.What is the statement below means? int i=10; a) declaration b) definition c) both d) none 15

8 37. The Real constants in C can be expressed in which of the following forms a) Fractional form only b) Exponential form only c) ASCII form only d) Both Fractional and Exponential forms 38. What will be the value of variable a in the following code? unsigned char a; a = 0xFF + 1; printf( %d, a); a) 0xFF b) 0x100 c) 0 d) 0x0 39.What would be the output of the following program? #include <stdio.h> printf( \n%c, abcdefgh [4]); a) abcdefgh b) d c) e d) error 40. What does the following code print? int i = 7; printf( %d\n, i++ * i++); a) prints 49 b) prints 56 c) is compiler dependent d) expression i++ * i++ is undefined 16