using System;

​

namespace IDealProgram {

​

   public class BeratBadanIDeal {

      public static void Main(string[] args) {

         BeratBadan bb = new BeratBadan();

         try {

            bb.showBeratBadan();

         } catch(TidakIdealException e) {

            Console.WriteLine("TidakIdealException: {0}", e.Message);

         }

         Console.ReadLine();

      }

   }

}

​

public class TidakIdealException: Exception {

​

   public TidakIdealException(string message): base(message) {

   }

}

​

public  class BeratBadan {

   float beratbadan = 55;

   float tinggibadan = 170;

   public void showBeratBadan() {

         float ideal = ((tinggibadan - 100) - ((tinggibadan - 100)/100));

      if(beratbadan != ideal) {

         throw (new TidakIdealException("Berat Badan Anda Tidak Ideal, Berat badan ideal anda adalah :"+ ideal));

      } else {

         Console.WriteLine("Berat badan anda ideal: {0}", beratbadan);

      }

   }

}