int Sum1 = 0; 
             int Sum2 = 0; 
             Console.WriteLine("Nomreye aval Daneshjooye 1:"); 
             Sum1 = int.Parse(Console.ReadLine()); 
             Console.WriteLine("Nomreye dovom Daneshjooye 1:"); 
             Sum1 += int.Parse(Console.ReadLine()); 
  
             Console.WriteLine("Nomreye aval Daneshjooye 2:"); 
             Sum2 = int.Parse(Console.ReadLine()); 
             Console.WriteLine("Nomreye dovom Daneshjooye 2:"); 
             Sum2 += int.Parse(Console.ReadLine()); 
  
             Console.WriteLine(string.Format("Moadel Daneshjoo 1 :{0}\r\nMoadel Daneshjoo 2 :{1}", Sum1 / 2, Sum2 / 2)); 
             Console.ReadKey();