Saat, Dakika, Saniye cinsinden girilen veriyi Saniye döndürmek

 
   
  using System; 
  using System.Text.RegularExpressions; 
   
  namespace zaman 
  { 
  	class Program 
  	{ 
  		public static void Main(string[] args) 
  		{ 
  			 
  			Console.WriteLine("Zamanı girin"); 
  			string yazı=Console.ReadLine(); 
  			var regex=new Regex(@"(\d+.)"); 
  			int saat=0; 
  			int dakka=0; 
  			int saniye=0; 
  			foreach (Match myMatch in regex.Matches(@yazı)) 
  			{ 
  				 
  				int i=1; 
  				if (myMatch.Groups[i].Value.EndsWith("H",StringComparison.CurrentCultureIgnoreCase)) { 
  					saat = Convert.ToInt32(myMatch.Groups[i].Value.Substring(0, myMatch.Groups[i].Value.Length - i)) * 3600; 
  				} 
  				 
  				if (myMatch.Groups[i].Value.EndsWith("M",StringComparison.CurrentCultureIgnoreCase)) { 
  					dakka = Convert.ToInt32(myMatch.Groups[i].Value.Substring(0, myMatch.Groups[i].Value.Length - i)) * 60; 
  				} 
  				 
  				if (myMatch.Groups[i].Value.EndsWith("S",StringComparison.CurrentCultureIgnoreCase)) { 
  					saniye = Convert.ToInt32(myMatch.Groups[i].Value.Substring(0, myMatch.Groups[i].Value.Length - i)) * i; 
  				} 
  				 
  				i++; 
  				 
  			} 
  			 
  			Console.WriteLine(saat+dakka+saniye); 
  			Console.ReadKey(true); 
  		} 
  	} 
  }