Program to swap two numbers without using the third variable

This program is to swap/exchange two numbers without using the third number in the way as given below:

Example: Suppose, there are two numbers 25 and 23.

Let

X= 25 (First number), Y= 23 (second number)
Swapping Logic:
X = X + Y = 25 +23 = 48
Y = X - Y = 48 - 23 = 25
X = X -Y = 48 - 25 = 23
and the numbers are swapped as X =23 and Y =25.

Algorithm

STEP 1: START
STEP 2: ENTER x, y
STEP 3: PRINT x, y
STEP 4: x = x + y
STEP 5: y= x - y
STEP 6: x =x - y
STEP 7: PRINT x, y
STEP 8: END

Java Program

import java.util.*;
class Swap 
{
    public static void main(String a[]) 
    { 
        System.out.println("Enter the value of x and y");
        Scanner sc = new Scanner(System.in);
        /*Define variables*/
        int x = sc.nextInt();
        int y = sc.nextInt();
        System.out.println("before swapping numbers: "+x +"	"+ y);
       /*Swapping*/
        x = x + y; 
        y = x - y; 
        x = x - y; 
        System.out.println("After swapping: "+x +"	" + y); 
    } 
}

Output:

Enter the value of x and y
23  43
before swapping numbers: 23  43
After swapping:  43  23

C Program

#include<stdio.h>
int main() 
{ 
  int x, y;
  printf("Enter the value of x and y?");
  scanf("%d %d",&x,&y);
  printf("before swapping numbers: %d   %d\n",x,y);

/*swapping*/
  x = x + y; 
  y = x - y;  
  x = x - y;
  printf("After swapping: %d    %d",x,y); 
  return 0; 
}

Output:

Enter the value of x and y?
13 
22
before swapping numbers:  13  22
After swapping:  22  13

C# Program

using System;   
class swap { 
public static void Main() 
    { 
        Console.WriteLine("Enter the value of x and y");
        int x=Convert.ToInt32(Console.ReadLine());
        int y = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("before swapping numbers: "+x +"	"+ y);
          /*swapping*/
        x = x + y; 
        y = x - y; 
        x = x - y; 
        Console.WriteLine("After swapping: "+x +"	" + y); 
        
    } 
} 

Output:

Enter the value of x and y
213 
432
before swapping numbers: 213   432
After swapping:  432   213

Python Program

x = int(input("Enter the value of x?"))
y = int(input("Enter the value of y?"))
print("before swapping numbers: %d   %d\n" %(x,y))
#swapping#
x = x + y   
y = x - y  
x = x - y   
print("After swapping: %d   %d\n"%(x,y))

Output:

Enter the value of x? 
12
Enter the value of y? 
24
before swapping numbers:  12   24
After swapping:  24   12

PHP Program

<?php
echo "Enter the value of x";
$x = readline();
echo "Enter the value of y";
$y = readline();
echo "before swapping numbers: ";
echo $x;
echo "    ";
echo $y;
echo "\n";

/*swapping*/
$x = $x + $y; 
$y = $x - $y; 
$x = $x - $y; 
echo "After swapping ";
echo $x;
echo "    ";
echo $y;
?>

Output:

Enter the value of x   55
Enter the value of y   46
before swapping numbers:  55  46
After swapping  46  55

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