Standard Library Functions MCQs

For the given math function, an error occurs if the arguments are not in the range [-1, +1].

double acos(double x);

Which of the following macros is defined under the header limits.h?

A range error occurs if the result of the function cannot be represented as a value.

Choose the correct statement.

What will be the output of the following C code, given that the maximum value of signed char is 127 and that of unsigned char is 255.

#include<stdio.h>
#include<limits.h>
#define SCHAR_MAX
main()
{
    printf("%d",SCHAR_MAX+1);
}

The . . . . . . . . function returns no value.

What will be the output of the following C code?

char str[] ;  
strcpy(str, "Hello"); 
res = atoi(str);
printf(" %s  %d\n", str, res);

What will be the output of the following C code?

void main() 
{ 
   div_t  res;  
   res = div(34, 4); 
   printf("quotient part = %d\n", res.quot); 
   printf("remainder part = %d\n", res.rem); 
}

Which function returns a pseudo-random integer?