Structure and Union MCQs

The number of distinct nodes the following struct declaration can point to is . . . . . . . .

struct node
{
    struct node *left;
    struct node *centre;
    struct node *right;
};

In the following declaration of bit-fields, the constant-expression specifies . . . . . . . .

struct-declarator:
declarator
type-specifier declarator opt : constant-expression

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char *c;
};
void main()
{
    struct student s[2];
    printf("%d", sizeof(s));
}

What will be the output of the following C code according to C99 standard?

#include <stdio.h>
struct p
{
    int k;
    char c;
    float f;
};
int main()
{
    struct p x = {.c = 97, .k = 1, 3};
    printf("%f \n", x.f);
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    int no = 5;
    char name[20];
};
void main()
{
    struct student s;
    s.no = 8;
    printf("hello");
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char *name;
};
struct student s;
struct student fun(void)
{
    s.name = "newton";
    printf("%s\n", s.name);
    s.name = "alan";
    return s;
}
void main()
{
    struct student m = fun();
    printf("%s\n", m.name);
    m.name = "turing";
    printf("%s\n", s.name);
}

What will be the output of the following C code?

#include <stdio.h>
typedef int integer;
int main()
{
    int i = 10, *ptr;
    float f = 20;
    integer j = i;
    ptr = &j
    printf("%d\n", *ptr);
    return 0;
}

What happens when install(s, t) finds that the name being installed is already present in the table?

What will be the output of the following C code?

#include <stdio.h>
struct point
{
    int x;
    int y;
};
void foo(struct point*);
int main()
{
    struct point p1[]  =  {1, 2, 3, 4};
    foo(p1);
}
void foo(struct point p[])
{
    printf("%d\n", p[1].x);
}