Swap - reference parameters - Practice Exercises C# Sharp

Lesson 5:

Functions

Exercise 5.10:

Swap - reference parameters

Objetive:

Create a function named "Swap" to swap the values of two integer numbers, which are passed by reference.

An example of use might be:

int x=5, y=3;
Swap(ref x, ref y);
Console.WriteLine("x={0}, y={1}", x, y);
(which should write "x=3, y=5")

using System;
public class F_Swap
{
    public static void Swap(ref int x, ref int y)
    {
        int swap;

        swap = x;
        x = y;
        y = swap;
    }

    public static void Main()
    {
        int x = 5;
        int y = 3;

        Swap(ref x, ref y);

        Console.WriteLine("x: {0} , y: {1}", x, y);
    }
}