Scenario 1-2 Flowchart

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {

        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("Hello, world!");

            int input = 5;
            Console.WriteLine(fact(input));
        }

        public static int fact(int n) {
            if (n > 1) {
                return n * fact(n - 1);
            } else {
                return n;
            }
        }
    }
}