C Language Interview Questions Test 5

This Test will cover complete C with very important questions, starting off from basics to advanced level.

Q. If an integer needs two bytes of storage then maximum value of an unsigned integer is __________?

A. 2^16-1	B. 2^15-1
C. 2^16	D. 2^15

Q. The code printf("%d",printf("tim")); __________.

A. results in a syntax error	B. output is tim3
C. outputs a garbage value	D. prints tim and terminates abruptly

Q. If abc is the input then the following program fragment results in __________?

char x, y, z;
printf("%d", scanf("%c%c%c", &x, &y, &z));

A. A syntax error	B. A fatal error
C. Segmentation violation	D. printing of the 3 characters input.

Q. Let a and b be two positive integers. Which of the following options correctly relates / and %?

A. b = `(a/b)*b + a%b`	B. a = `(a/b)*b + a%b`
C. b = `(a%b)*b + a/b`	D. a = `(a%b)*b + a/b`

Q. If the required output is abcdefghijklmnopqrstuvwxyz then xxx should be __________?

char c = 'a';
while(c++ <= 'z') 
{
	putchar(xxx);
}

A. c	B. c++
C. c-1	D. -c

Q. The expression 5 - 2 - 3 * 5 - 2 will evaluate to 18, if __________?

A. - is left associative and * has precedence over -

B. - is right associative and * has precedence over -

C. - is right associative and - has precedence over *

D. - is left associative and - has precedence over *

Q. The below mentioned program fragment will __________.

int i = 263;

putchar(i);

A. print 263	B. print the ASCII equivalent of 263
C. rings the bell	D. prints a garbage

Q. The following program fragment will print __________.

unsigned i = 1;
int j = -4;
printf("%u",i+j);

A. garbage	B. -3
C. an integer that changes from machine to machine	D. none of the above

Q. If the following program fragment(assume negative numbers are stored in 2's complement form)

unsigned i = 1;
int j = -4;
printf("%u", i+j);

prints x then printf("%d", 8*sizeof(int)); outputs an integer that is same as __________. (log in the answers are to the base two)?

A. an unpredictable value	B. 8*log(x+3)
C. log(x+3)	D. none of the above

Q. The following program fragment results in __________?

for(i = 3; i < 15; i += 3);
    printf("%d", i);

A. a syntax error	B. an execution error
C. printing of 12	D. printing of 15

Q. The following program fragment results in __________?

for(i = 1; i < 5 ; ++i) 
{
    if(i == 3) 
    {
        continue;
    }
    else 
    { 
        printf("%d", i);
    }
}

A. 1 2 4 5	B. 1 2 4
C. 2 4 5	D. none of the above

Q. The following program fragment will __________.

int k = -7;
printf("%d", 0 < !k);

A. print 0	B. print a non-zero value
C. is illegal	D. print an unpredictable value

Q. What will be the output of the following loop?

for(putchar('c'); putchar('a'); putchar('r')) 
{
    putchar('t');
}

A. a syntax error	B. cartrt
C. catrat	D. catratratratrat...

Q. What will be the output of the following loop?

for(i=1, j=10; i<6; ++i, --j) 
{
    printf("%d %d", i, j);
}

A. 1 1 0 2 9 3 8 4 7 5 6	B. 1 2 3 4 5 10 9 8 7 6
C. 1 1 1 1 1 9 9 9 9 9	D. none of above

Q. The minimum number of temporary variables needed to swap the contents of two variables is __________?

A. 1	B. 2
C. 3	D. 0