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

namespace WindowsFormsApplication2
{
   public class Class1
    {
       public double textbox1;
       public double textbox2;
       public double textbox3;

       public void Class(double x, double y)
       {
           textbox1 = x;
           textbox2 = y;
       }
       public double srednia()
       {
           return (textbox1 + textbox2) / 2;
       }
    }
}