Question

write a program to input two Integers and interchange their values without using a third variable​

Answer 1

Answer:

C Program to swap two numbers without third variable

#include<stdio.h>

int main()

{

int a=10, b=20;

printf("Before swap a=%d b=%d",a,b);

a=a+b;//a=30 (10+20)

b=a-b;//b=10 (30-20)

a=a-b;//a=20 (30-10)

Answer 2

Program:-

Without using a third variable.

import java.util.*;

public class Brainly

{

static void main()

{

Scanner sc=new Scanner(System.in);

int a,b;

System.out.println("Enter two integers: ");

a=sc.nextInt();

b=sc.nextInt();

System.out.println("Before interechange: a="+a+",b="+b);

a=a+b;

b=a-b;

a=a-b;

System.out.println("After interechange: a="+a+",b="+b);

}

}

With using third variable.

import java.util.*;

public class Brainly

{

static void main()

{

Scanner sc=new Scanner(System.in);

int a,b,c;

System.out.println("Enter two integers: ");

a=sc.nextInt();

b=sc.nextInt();

System.out.println("Before interechange: a="+a+",b="+b);

c=a;

a=b;

b=c;

System.out.println("After interechange: a="+a+",b="+b);

}

}