Swap - reference parameters

Proposed exercise

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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").

Output

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Solution

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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 );
}
}