scrib mencari keliling persegi c#
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { int sisi ,keliling; string input; input = Console.ReadLine(); int.TryParse(input, out sisi); keliling =(4 * sisi); Console.Write("{0}",keliling); Console.ReadLine(); } }