ex-22-08

Programming Csharp Source Code(代码) Programming Csharp Source Code

// Example 22-08: The four-function calculator in a DLL

using System;

namespace Programming_CSharp
{
    public class Calculator
    {
        public Calculator()
        {
            
        }
        public Double Add (Double left, Double right)
        {
            return left + right;
        }
        public Double Subtract (Double left, Double right)
        {
            return left - right;
        }
        public Double Multiply (Double left, Double right)
        {
            return left * right;
        }
        public Double Divide (Double left, Double right)
        {
            return left / right;
        }
    }
}