Write a program to swap three numbers

Problem statement:- Program to swap three numbers.

Data requirement:-

   Input Data:-num1,num2,num3

  Output Data:-num1,num2,num3

Program in C

Here is the source code of the C Program to swap three numbers.

Code:

#include<stdio.h>

int main()
{
   int num1,num2,num3;
   printf("Enter 3 numbers:");
   scanf("%d %d %d",&num1,&num2,&num3);

   num1=num1+num2+num3;
   num2=num1-num2-num3;
   num3=num1-num2-num3;
   num1=num1-num2-num3;

   printf("***After swapping***");
   printf("\nNumber 1: %d",num1);
   printf("\nNumber 2: %d",num2);
   printf("\nNumber 3: %d",num3);
}

Input/Output:

Enter 3 numbers:
9
8
11
***After swapping***
Number 1: 11
Number 2: 9
Number 3: 8

Program in C++

Here is the source code of the C++ Program to swap three numbers.

Code:

#include<iostream>

using namespace std;
int main()
{
   int num1,num2,num3;
   cout<<"Enter 3 numbers:";
   cin>>num1>>num2>>num3;

   num1=num1+num2+num3;
   num2=num1-num2-num3;
   num3=num1-num2-num3;
   num1=num1-num2-num3;

  cout<<"***After swapping***";
   cout<<"\nNumber 1: "<<num1;
   cout<<"\nNumber 2: "<<num2;
   cout<<"\nNumber 3: "<<num3;
}

Input/Output:

Enter 3 numbers:
77
88
99
***After swapping***
Number 1: 99
Number 2: 77
Number 3: 88

Program in Java

Here is the source code of the Java Program to swap three numbers.

Code:

import java.util.Scanner;

public class SwapThreeNumbers {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int num1,num2,num3;
   System.out.println("Enter 3 numbers:");
   num1=cs.nextInt();
   num2=cs.nextInt();
   num3=cs.nextInt();
 
   num1=num1+num2+num3;
   num2=num1-num2-num3;
   num3=num1-num2-num3;
   num1=num1-num2-num3;
 
   System.out.println("***After swapping***");
   System.out.println("Number 1: "+num1);
   System.out.println("Number 2: "+num2);
   System.out.println("Number 3: "+num3);
cs.close();
}
}

Input/Output:

Enter 3 numbers:
111
555
777
***After swapping***
Number 1: 777
Number 2: 111
Number 3: 555

Program in Python

Here is the source code of the Python Program to swap three numbers.

Code:

num1=int(input("Enter 1st number:"))
num2=int(input("Enter 2nd number:"))
num3=int(input("Enter 3rd number:"))

num1=num1+num2+num3
num2=num1-num2-num3
num3=num1-num2-num3
num1=num1-num2-num3

print("***After swapping***")
print("Number 1: ",num1)
print("Number 2: ",num2)
print("Number 3: ",num3)

Input/Output:
Enter 1st number:48
Enter 2nd number:98
Enter 3rd number:78
***After swapping***
Number 1:  78
Number 2:  48
Number 3:  98

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