C Structure & Union Questions

What is the output of the output of the following program ?

#include<stdio.h>

struct ch

{

    char a;

    char b;

};

 

int main()

{

    printf("%d", sizeof(struct ch));

    return 0;

}

What is the expected output of the code below ?

#include<stdio.h>

struct ch

{

    char a;

    static int b;

};

 

int main()

{

    printf("%d", sizeof(struct ch));

    return 0;

}

Select the correct option related to the declaration of arr given below.

struct new 

{ 

   int a; 

   float b; 

}; 

struct new *arr[10];

Can there be a structure that has a element that has it's own type like this structure below ?

struct s

{ 

    int a; 

    struct st i; 

};

Select the correct option for the following C program.

#include<stdio.h> 

struct new1 

{ 

    int a; 

    int b; 

}; 

struct new2 

{ 

    int a; 

    int b; 

}; 

int main() 

{ 

    struct new1 temp; 

    temp.a = 10; 

    temp.b = 10;

    struct new2 temp1; 

    temp1.a = 11; 

    temp1.b = 10;

    if(temp.a==temp1.a)

        printf("Equal"); 

    else

        printf("Not equal");

    return 0; 

}

What will be the output of the following code ?

#include<stdio.h> 

union test

{

    int a;

    char arr[8];

    int b;

};

 

int main()

{

    printf("%d", sizeof(union test));

    return 0;

}

What is the output for the code given below ?

#include <stdio.h>

#include <string.h>

struct s

{

  char elem[20];

};

 

int main()

{

  struct s st1, st2;

  strcpy(st1.elem, "PrepInsta");

  st2 = st1;

  st1.elem[0] = 'p'; 

  printf("%s",st2.elem);

  return 0;

}

What is the expected output of the following code ?

#include<stdio.h>

struct s

{

  int a, b, c;

};

 

int main()

{

  struct s new = {.b = 12, .c = 9, .a = 10};

  printf("%d %d %d", new.a, new.b, new.c);

  return 0;

}

Given that size of short is 2, float is 4 and long is 8 bytes. What will be the size of structure of x type.

struct { 

    short a[5];

    union { 

         float b; 

         long c; 

    }y; 

}x;

What will be the output of the following program ?

#include‹stdio.h›

int main()

{

    struct s

    {

        char site[] = "PrepInsta";

        int x = 1299;

    };

    struct s *p;

    printf("%d ", p->x);

    printf("%s", p->site);

    return 0;

}