Pointer MCQs

In C, what is a pointer to a function that takes no arguments and returns an integer?

What is the result of the expression *ptr = NULL in C, where ptr is a pointer?

In C, what is a pointer to a constant pointer (int* const)?

Determine Output:

void main()
{
      char far *farther, *farthest;
      printf("%d..%d", sizeof(farther), sizeof(farthest));
}

Determine Output:

main()
{
      char *str1 = "abcd";
      char str2[] = "abcd";
      printf("%d %d %d", sizeof(str1), sizeof(str2), sizeof("abcd"));
}

Choose the best answer. Prior to using a pointer variable

Comment on the following pointer declaration?

int*ptr, p;

What will be the output?

main() 
{ 
      char *p; 
      p = "Hello"; 
      printf("%cn",*&*p); 
}

Determine output:

#include <stdio.h>
void main()
{
      char *p = NULL;
      char *q = 0;
      if(p)
            printf(" p ");
      else
            printf("nullp");
      if(q)
            printf("q");
      else
            printf(" nullq");
}