Pointer MCQs

What will be the output of the following C code?

#include <stdio.h>
void fun(char *k)
{
    printf("%s", k);
}
void main()
{
    char s[] = "hello";
    fun(s);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 0, j = 1;
    int *a[] = {&i, &j};
    printf("%d", *a[0]);
    return 0;
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int *ptr, a = 10;
    ptr = &a
    *ptr += 1;
    printf("%d,%d/n", *ptr, a);
}

What will be the output of the following C code?

#include <stdio.h>
int *f();
int main()
{
    int *p = f();
    printf("%d\n", *p);
}
int *f()
{
    int *j = (int*)malloc(sizeof(int));
    *j = 10;
    return j;
}

Comment on the following two operations.

int *a[] = {{1, 2, 3}, {1, 2, 3, 4}}; //- 1
int b[][] = {{1, 2, 3}, {1, 2, 3, 4}}; //- 2

Which of the following is a correct syntax to pass a Function Pointer as an argument?

What will be the output of the following C code?

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

Which of the following does not initialize ptr to null (assuming variable declaration of a as int a=0;)?

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    double *ptr = (double *)100;
    ptr = ptr + 2;
    printf("%u", ptr);
}