Q:

Program to swap two numbers

belongs to collection: Number Programs

robaa
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2022-11-08
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This program is to swap/exchange two numbers by using a variable.

For example:

Numbers to swap: 11 and 12  

Let x= 11, y= 12  

  Swapping Logic:  

t=x= 11  

x =y =12  

y =t =11  

  After swapping:  

x= 12, y = 11  

Algorithm

  • STEP 1: START
  • STEP 2: DEFINE x, y, t
  • STEP 3: ENTER x, y
  • STEP 4: PRINT x, y
  • STEP 5: t = x
  • STEP 6: x= y
  • STEP 7: y= t
  • STEP 8: PRINT x, y
  • STEP 9: END
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All Answers

robaa
2022-11-08
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Java Program

import java.util.*;  
class Swap_With {  
    public static void main(String[] args) {  
       int x, y, t;// x and y are to swap   
       Scanner sc = new Scanner(System.in);  
       System.out.println("Enter the value of X and Y");  
       x = sc.nextInt();  
       y = sc.nextInt();  
       System.out.println("before swapping numbers: "+x +"  "+ y);  
       /*swapping */  
       t = x;  
       x = y;  
       y = t;  
       System.out.println("After swapping: "+x +"   " + y);  
       System.out.println( );  
    }    
}

 

Output:

Enter the value of X and Y
2
3
before swapping numbers: 2   3
After swapping: 3   2

 

C Program

#include <stdio.h>  
int main()  
{  
  int x, y, t;// x and y are the swapping variables and t is another variable  
  printf("Enter the value of X and Y\n");  
  scanf("%d%d", &x, &y);  
  printf("before swapping numbers: %d   %d\n",x,y);  
/*swapping*/  
  t = x;  
  x = y;  
  y = t;  
  printf("After swapping: %d    %d",x,y);  
  return 0;  
}

 

Output:

Enter the value of X and Y
29
39
before swapping numbers: 29   39
After swapping: 39  29

 

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#  
temp = x  
x = y  
y = temp  
print("After swapping: %d   %d\n"%(x,y))

 

Output:

Enter the value of X?  87
Enter the value of Y?  43
before swapping numbers: 87  43
After swapping: 43  87

 

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

 

Output:

Enter the value of x
33
Enter the value of Y
22
before swapping numbers: 33  22
After swapping  22  33

 

C# Program

using System;   
public 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());  
    int temp;  
    Console.WriteLine("before swapping numbers: "+x +"  "+ y);  
      /*swapping*/  
             temp = x;  
       x = y;  
       y = temp;  
    Console.WriteLine("After swapping: "+x +"   " + y);   
}}

 

Output:

Enter the value of x and y
65
54
before swapping numbers:  65  54
After swapping:  54  65

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