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;
    struct student m;
    s.c = m.c = "hi";
    m.point = &s
    (m.point)->c = "hey";
    printf("%s\t%s\t", s.c, m.c);
}

Presence of code like "s.t.b = 10" indicates . . . . . . . .

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

#include <stdio.h>
union
{
    int ival;
    float fval;
} u;
void main()
{
    printf("%d", sizeof(u));
}

Which option is not possible for the following function call?

func(&s.a); //where s is a variable of type struct and a is the member of the struct.

What will be the output of the following C code?

#include <stdio.h>
struct temp
{
    int a;
} s;
void func(struct temp s)
{
    s.a = 10;
    printf("%d\t", s.a);
}
main()
{
    func(s);
    printf("%d\t", s.a);
}

What will be the output of the following C code?

#include <stdio.h>
struct p
{
    int x[2];
};
struct q
{
    int *x;
};
int main()
{
    struct p p1 = {1, 2};
    struct q *ptr1 = (struct q*)&p1
    ptr1->x = (struct q*)&p1.x
    printf("%d\n", ptr1->x[0]);
}

What will be the output of the following C code?

#include <stdio.h>
struct
{
    int k;
    char c;
};
int main()
{
    struct p;
    p.k = 10;
    printf("%d\n", p.k);
}

What will be the output of the following C code?

#include <stdio.h>
struct point
{
    int x;
    int y;
};
struct notpoint
{
    int x;
    int y;
};
void foo(struct point);
int main()
{
    struct notpoint p1 = {1, 2};
    foo(p1);
}
void foo(struct point p)
{
    printf("%d\n", p.x);
}

What will be the output of the following C code?

#include <stdio.h>
typedef struct student
{
    char *a;
}stu;
void main()
{
    stu s;
    s.a = "hi";
    printf("%s", s.a);
}