swap two digits in c code example
Example 1: how to swap values in variables in c
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num1 = 10;
int num2 = 9;
int tmp;
int *p_num1 = &num1;
int *p_num2 = &num2;
printf("num1: %i\n", num1);
printf("num2: %i\n", num2);
tmp = num1;
*p_num1 = num2;
*p_num2 = tmp;
printf("num1: %i\n", num1);
printf("num2: %i\n", num2);
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();
}
}