static void Main(string[] args)
{
Calculation cal = new Calculation(Add);
Phanso a = new Phanso(2, 3);
Phanso b = new Phanso(5, 6);
cal += new Calculation(Subtract);
cal += new Calculation(Subtract);
cal -= Subtract;
cal(a, b);
Console.ReadKey();
}
static void Subtract(Phanso a, Phanso b)
{
Phanso p = new Phanso(a.tu * b.mau - b.tu * a.mau, a.mau * b.mau);
Console.WriteLine(p.tu + "/" + p.mau);
}
static void Add(Phanso a, Phanso b)
{
Phanso p = new Phanso(a.tu * b.mau + b.tu * a.mau, a.mau * b.mau);
Console.WriteLine(p.tu + "/" + p.mau);
}