C# - While & Do..While Loop

using System;

namespace LearnCS
{
    class Program
    {
        static void Main(string[] args)
        {

            int i = 0;

            while (i < 20) {
                Console.WriteLine(i);
                i++;
            }
           
        }
    }        
}

using System;

namespace LearnCS
{
    class Program
    {
        static void Main(string[] args)
        {

            int i = 0;

            do
            {
                Console.WriteLine(i);
                i++;
            } while (i < 25);
           
        }
    }        
}