static void Main(string[] args)
{
Calculator c = new Calculator(20, 5);
Console.WriteLine(c.Add());
Console.WriteLine(c.Diff());
Console.WriteLine(c.Mul());
Console.WriteLine(c.Div());
}
static void Main(string[] args)
{
Calculator <int, int> calc1 = new Calculator <int, int>(2, 5);
Console.WriteLine($"{calc1.Sum()} \n{calc1.Diff()} \n{calc1.Prod()} \n{calc1.Quot()}");
Console.WriteLine($"{ new string('=', 15)} \n");
Calculator <double, int> calc2 = new Calculator <double, int>(2, 5);
Console.WriteLine($"{calc2.Sum()} \n{calc2.Diff()} \n{calc2.Prod()} \n{calc2.Quot()}");
Console.WriteLine($"{ new string('=', 15)} \n");
Calculator <decimal, long> calc3 = new Calculator <decimal, long>(2m, 5);
Console.WriteLine($"{calc3.Sum()} \n{calc3.Diff()} \n{calc3.Prod()} \n{calc3.Quot()}");
Console.WriteLine($"{ new string('=', 15)} \n");
Console.ReadKey();
}
