public static NumberAdder operator+(NumberAdder first, NumberAdder second)
{
NumberAdder res = new NumberAdder();
res.Width = first.Width + second.Width;
res.Height = first.Height + second.Height;
return(res);
}
public static NumberAdder operator-(NumberAdder first, NumberAdder second)
{
double w = first.Width - second.Width;
double h = first.Height - second.Height;
NumberAdder res = new NumberAdder(w, h);
return(res);
}
private static void TestNumberAdder()
{
double w1 = 10, h1 = 5;
double w2 = 30, h2 = 15;
NumberAdder adder1, adder2;
adder1 = new NumberAdder(w1, h1);
adder2 = new NumberAdder(w2, h2);
NumberAdder _add = adder1 + adder2;
NumberAdder _sub = adder1 - adder2;
NumberAdder _mult = adder1 * adder2;
NumberAdder _div = adder1 / adder2;
Console.WriteLine("sum = {0}", _add.ToString());
Console.WriteLine("sub = {0}", _sub.ToString());
Console.WriteLine("mult = {0}", _mult.ToString());
Console.WriteLine("div = {0}", _div.ToString());
}