c coding round 2

What will be the output of the following C code?

#include <stdio.h>

void main()

{

float x = 0.1;

printf("%d, ", x);

printf("%f", x);

}

• 0.100000, junk value

• Junk value, 0.100000

• 0, 0.100000

• 0, 0.999999

int x=1;

double y= 0.5 * (exp (x) + exp (-x));

• cos(x)

• cosh(x)

• fmod(x)

• modf(x)

What will be the output of the following C code if the system time is 1:52 PM (Sunday)?

#include<stdio.h>

#include<time.h>

int main()

{

struct tm *ptr;

time_t t;

char str[100];

t = time(NULL);

ptr = localtime(&t);

strftime(str,100,"%I",ptr);

puts(str);

return 0;

}

• error

• 01

• 1

• 13

What is the meaning of the following C code if output is 0?

#include<stdio.h>

#include<time.h>

int main()

{

struct tm *local;

time_t t;

t=time(NULL);

local=localtime(&t);

printf("%d",local->tm_isdst);

return 0;

}

• DST is in effect

• DST status is unknown

• DST is not in effect

• DST is corresponding with local time

What will be the output of the following C code?

#include <stdio.h>

void main()

{

register int x = 0;

if (x < 2)

{

x++;

main();

}

}

• Segmentation fault

• main is called twice

• main is called once

• main is called thrice

What will be the output of the following C code?

#include <stdio.h>

struct point

{

int x;

int y;

};

void foo(struct point*);

int main()

{

struct point p1[] = {1, 2, 3, 4};

foo(p1);

}

void foo(struct point p[])

{

printf("%d\n", p[1].x);

}

• compile error

• 1

• 3

• 2

What will be the output of the following C code?

#include <stdio.h>

void main()

{

float x;

int y;

printf("enter two numbers \n");

scanf("%f %f", &x, &y);

printf("%f, %d", x, y);

}

• 7.000000, 7

• Run time error

• 7.000000, junk

• Varies

What is the output of the following C code if there is no error in stream fp?

#include <stdio.h>

int main()

{

FILE *fp;

fp = fopen("newfile", "w");

printf("%d\n", ferror(fp));

return 0;

}

• Compilation error

• 0

• 1

• none

What will be the output of the following C code?

#include <stdio.h>

int x = 0;

void main()

{

int *const ptr = &x;

printf("%p\n", ptr);

ptr++;

printf("%p\n ", ptr);

}

• 0 1

• Compile time error

• 0xbfd605e8 0xbfd605ec

• 0xbfd605e8 0xbfd605e8

What will be the output of the following C code?

#include <stdio.h>

int main()

{

double ptr = (double )100;

ptr = ptr + 2;

printf("%u", ptr);

}

• 115

• 102

• 116

• 108