/*

 * C Program to Print the Range of Datatypes

 */

#include <stdio.h>

#define SIZE(x) sizeof(x)*8

void signed_one(int);

void unsigned_one(int);

void main()

{

    printf("range of int");

    signed_one(SIZE(int));

    printf("\nrange of unsigned int");

    unsigned_one(SIZE(unsigned int));

    printf("\n\nrange of char");

    signed_one(SIZE(char));

    printf("\nrange of unsigned char");

    unsigned_one(SIZE(unsigned char));

    printf("\n\nrange of short");

    signed_one(SIZE(short));

    printf("\nrange of unsigned short");

    unsigned_one(SIZE(unsigned short));

}

/* RETURNS THE RANGE SIGNED*/

void signed_one(int count)

{

    int min, max, pro;

    pro = 1;

    while (count != 1)

    {

        pro = pro << 1;

        count--;

    }

    min = ~pro;

    min = min + 1;

    max = pro - 1;

    printf("\n%d to %d", min, max);

}

/* RETURNS THE RANGE UNSIGNED */

void unsigned_one(int count)

{

    unsigned int min, max, pro = 1;

    while (count != 0)

    {

        pro = pro << 1;

        count--;

    }

    min = 0;

    max = pro - 1;

    printf("\n%d to %d", min, max);

}

*

 * C program to illustrate the concept of unions using dot operator

 */

#include<stdio.h>

int main()

{

#include <stdio.h>

//scope of union -> main function 

void main()

{

    union number

    {

        int  n1;

        float n2;

    };

    //initializing union number variable by using union keyword and tag name

    union number x;

    printf("Enter the value of n1: ");

    scanf("%d", &x.n1); //access using dot product

    printf("Value of n1 = %d", x.n1);

    printf("\nEnter the value of n2: ");

    scanf("%f", &x.n2);

    printf("Value of n2 = %f\n", x.n2);

}

/*

 * C program to find the size of a union

 */

#include <stdio.h>

void main()

{

    union sample

    {

        int   m;

        float n;

        char  ch;

    };

    union sample u;

    printf("The size of union = %d\n", sizeof(u));

    /*  initialization */

    u.m = 25;

    printf("%d %f %c\n", u.m, u.n, u.ch);

    u.n = 0.2;

    printf("%d %f %c\n", u.m, u.n, u.ch);

    u.ch = 'p';

    printf("%d %f %c\n", u.m, u.n, u.ch);

}