how to swap 2 numbers without 3rd variable code example
Example 1: swap without using third variable
// SWAPPING WITHOUT USING THIRD VARIABLE
#include
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)
printf("\nAfter swap a=%d b=%d",a,b);
return 0;
}
Example 2: swap 2 integers without using temporary variable
using System;
class MainClass {
public static void Main (string[] args) {
int num1 = int.Parse(Console.ReadLine());
int num2 = int.Parse(Console.ReadLine());
num1 = num1 + num2;
num2 = num1 - num2;
num1 = num1 - num2;
Console.WriteLine("After swapping: num1 = "+ num1 + ", num2 = " + num2);
Console.ReadLine();
}
}
Example 3: how to swap 2 numbers without 3rd variable
int a = 3;
int b = 5;
a = b*a;
b = a/b
a = a/b