Data Type C# Tutorial

using System;
class MainClass
{
    public static void Main()
    {
        unchecked
        {
            byte a = 55;
            byte b = 210;
            byte c = (byte) (a + b);
        }
    }
}
Unhandled Exception: System.OverflowException: Arithmetic operation resulted in an overflow.
at MainClass.Main()