C#学习之——运算符重载

     运算符重载，就是对已有的运算符重新进行定义，赋予其另一种功能，以适应不同的数据类型。

要重载运算符需要使用 operator关键字，并且要使用访问修饰符static修饰。如下：

    

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication3
{
    class Program
    {
        public class Sum
        {
            #region Members
            public int num1;
            public int num2;
            #endregion

            #region Constructor
            public Sum(int number1,int number2)
            {
                this.num1 = number1;
                this.num2 = number2;
            }
            #endregion

            #region Operator
            public static Sum operator +(Sum sum1,Sum sum2)
            {
                return new Sum(sum1.num1+sum2.num1,sum2.num2+sum1.num2);
            }
            #endregion


        }
        static void Main(string[] args)
        {
            Sum sumFirst=new Sum(5,6);
            Sum sumSecond=new Sum(6,5);
            Sum sumThird = sumFirst + sumSecond;

            Console.WriteLine("sumThird.num1={0},sumThird.num2={0}",sumThird.num1,sumThird.num2);
            Console.ReadKey();
        }
    }
}

运行结果为：