ex-19-02

Programming Csharp Source Code(代码) Programming Csharp Source Code

// Example 19-02: The Calculator interface

namespace Programming_CSharp
{
    using System;

    public interface ICalc
    {
        double Add(double x, double y);
        double Sub(double x, double y);
        double Mult(double x, double y);
        double Div(double x, double y);
    }
}