Description

Swap two strings means first string will be second string and second string will be the first string.

C/C++

/* C Program to swap two strings */
//Save it as SwapTwoStrings.c


#include<stdio.h>
int main(){

    char firstString[100], secondString[100], tempString[100];

    printf("Enter first String : ");
    gets(firstString);

    printf("Enter second string : ");
    gets(secondString);

    printf("The string before swap %s and %s",firstString,secondString);

    //copy the value firstString variable into temporary variable
    strcpy(tempString,firstString);

    //copy the value secondString variable into firstString variable
    strcpy(firstString,secondString);

    //copy the value temporary variable into secondString variable
    strcpy(secondString,tempString);

    printf("\nThe string after swap %s and %s",firstString,secondString);

    return 0;
}

Input:
Enter first String : abc
Enter first String : def

Output:
The string before swap abc and def
The string after swap def and abc

Java

/* Java Program to swap two strings */
//Save it as SwapTwoStrings.java

import java.io.*;
import java.util.Scanner;

public class SwapTwoStrings {

    public static void main(String[] args) {

            Scanner scanner = new Scanner(System.in);

        System.out.println("Enter first String : ");
        String firstString = scanner.nextLine();

        System.out.println("Enter second String : ");
        String secondString = scanner.nextLine();

        System.out.println("The string before swap "+firstString+" and "+secondString);

            //Assign the value firstString variable into temporary variable
        String tempString = firstString;

            //Assign the value secondString variable into firstString variable
        firstString = secondString;

            //Assign the value temporary variable into secondString variable
        secondString = tempString;

        System.out.println("The string after swap "+firstString+" and "+secondString);
    }
}

Input:
Enter first String : 
abc
Enter first String : 
def

Output:
The string before swap abc and def
The string after swap def and abc

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