Please note, this is a STATIC archive of website www.w3schools.com from 05 May 2020, cach3.com does not collect or store any user information, there is no "phishing" involved.
Program.cs
 

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      int i = 0;
      do 
      {
        Console.WriteLine(i);
        i++;
      }
      while (i < 5);
    }
  }
}

Result:
0
1
2
3
4