Pointer MCQs

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    char *s = "hello";
    char *n = "cjn";
    char *p = s + n;
    printf("%c\t%c", *p, s[1]);
}

What will be the output of the following C code?

#include <stdio.h>
int mul(int a, int b, int c)
{
    return a * b * c;
}
void main()
{
    int (*function_pointer)(int, int, int);
    function_pointer  =  mul;
    printf("The product of three numbers is:%d",
    function_pointer(2, 3, 4));
}

Comment on the output of the following C code.

#include <stdio.h>
int main()
{
    char *str = "This" //Line 1
    char *ptr = "Program\n"; //Line 2
    str = ptr; //Line 3
    printf("%s, %s\n", str, ptr); //Line 4
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    char *a = {"p", "r", "o", "g", "r", "a", "m"};
    printf("%s", a);
}

What will be the output of the following C code (run without any command line arguments)?

#include <stdio.h>
int main(int argc, char *argv[])
{
    while (argv != NULL)
    printf("%s\n",  *(argv++));
    return 0;
}

Read the following expression?

void (*ptr)(int);

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int a[3] = {1, 2, 3};
    int *p = a;
    int **r = &p
    printf("%p %p", *r, a);
}

What will be the output of the following C code (if run with no options or arguments)?

#include <stdio.h>
int main(int argc, char *argv[])
{
    printf("%d\n", argc);
    return 0;
}

Comment on the following C statement.

const int *ptr;