Unsafe swap : Pointer « unsafe « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. unsafe
3. Pointer

using System;
using System.Globalization;

public class MainClass{

  unsafe public static void UnsafeSwap(int* i, int* j)
  {
    int temp = *i;
    *i = *j;
    *j = temp;
  }


  static void Main(string[] args)
  {
    int i = 10, j = 20;
    
    Console.WriteLine("Unsafe swap");
    Console.WriteLine("Values before unsafe swap: i = {0}, j = {1}", i, j);
    unsafe{ UnsafeSwap(&i, &j);} 
    Console.WriteLine("Values after unsafe swap: i = {0}, j = {1}", i, j);
  }
}

Unsafe swap
Values before unsafe swap: i = 10, j = 20
Values after unsafe swap: i = 20, j = 10