Structure and Union MCQs

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char *c;
    struct student *point;
};
void main()
{
    struct student s;
    printf("%d", sizeof(s));
}

What is typedef declaration?

Which of the following is an incorrect syntax for pointer to structure?

(Assuming struct temp{int b;}*my_struct;)

The size of a union is determined by the size of the . . . . . . . .

What will be the output of the following C code?

#include <stdio.h>
struct p
{
    int x;
    char y;
};
typedef struct p* q*;
int main()
{
    struct p p1[] = {1, 92, 3, 94, 5, 96};
    q ptr1 = p1;
    printf("%d\n", ptr1->x);
}

Which of the following is not possible regarding the structure variable?

What will be the output of the following C code? (Assuming size of int be 4)

#include <stdio.h>
struct temp
{
    int a;
    int b;
    int c;
} p[] = {0};
main()
{
    printf("%d", sizeof(p));
}

What will be the output of the following C code?

#include <stdio.h>
union p
{
    int x;
    char y;
}k = {1, 97};
int main()
{
    printf("%d\n", k.y);
}

What will be the output of the following C code?

#include <stdio.h>
typedef struct p *q;
struct p
{
    int x;
    char y;
    q ptr;
};
int main()
{
    struct p p = {1, 2, &p};
    printf("%d\n", p.ptr->x);
    return 0;
}