ex-19-02

来自「Programming Csharp Source Code(代码) Prog」· 代码 · 共 15 行

// 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);
    }
}