C program to swap two numbers in different ways

 /*

Md. Alamgir Hossain

Lecturer, Dept. of CSE, Prime University

*/

//C program to swap two numbers

//Input:    a = 10, b = 25

//Output: b = 25, a = 10

#include<stdio.h>

int main()

{

        int a, b, temp;

        a = 10;

        b = 25;

        printf("Before swapping: a = %d, b = %d\n",a, b);

        /*

        temp = a;

        a = b;

        b = temp;

        */

        /*

        Using arithmetic operators + and -

        a = a + b;

        b = a - b;

        a = a - b;

        */

        /*

        Using arithmetic operators * and /

        a = a * b;

        b = a / b;

        a = a / b;

        */

        

        /*

        Using bitwise XOR operator ^

        a = a ^ b;

        b = a ^ b;

        a = a ^ b;

        */

        //Using bitwise XOR operator ^ in one line

       // a ^= b ^= a ^= b;

        //Using arithmetic operators + and - in one line

        //a = (a + b) - (b = a);

        //Using arithmetic operators * and / in one line

        //a = (a * b) / (b = a);

        printf("After swapping: a = %d, b = %d\n",a, b);

        return 0;

}