Standard Library Functions MCQs

What will the code display on compiling?

void funccall() 
{ 
   printf("this is funccall\n"); 
}  
void main () 
{   
    atexit(funccall); 
    printf("program starts\n");  
    printf("program ends\n");  
}

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;
}

The macro definition of INT_MIN is . . . . . . . .

Which of the following is defined under the header file time.h?

What is the function of the void *realloc(void *str, size-t size);?

What will be the output of the following C code if the value of UCHAR_MAX is 127?

#include<stdio.h>
#include<limits.h>
int main()
{
    int d;
    d=CHAR_MAX;
    printf("%c",d);
}

mblen() function returns 0,if a null wide character was recognized. It returns -1 if an invalid multi-byte sequence was encountered.

size_t is of . . . . . . . . type.

Which macro can be used to detect and report exceptional conditions?