Standard Library Functions MCQs

Which of the following format specifiers is used to specify whether the given time is in AM or PM?

Which among the given function causes abnormal program termination ?

What is returned by the function if the space cannot be allocated by the function malloc(), realloc() and calloc()?

The following C code results in an error. State whether true or false.

#include<stdio.h>
#include<time.h>
int main()
{
    struct tm *local;
    time_t t;
    t=time(NULL);
    local=asctime(localtime(&t));
    printf("%d",local->tm_wday);
    return 0;
}

RAND_MAX macro is the maximum value returned by the rand function.

What will be the output of the following C code?

char word[20 ] = "1.234555 WELCOME"; 
char *w; double dis; 
dis= strtod(word, &w); 
printf("The number is %lf\n", dis); 
printf("String  is |%s|", w);

Which function returns the arc sine in the range [-pi/2, +pi/2] radians?

If the result underflow, the function returns zero.

Which of the following header file defines one function longjmp(), and one variable type jmp_buf?