C#學習4

函數的重載，及同一個類中方法名相同，參數列表不同，參數列表不同包括方法中的參數個數不同或參數的資料類型不同

首先說一種常見的重載，修改參數的個數和資料類型

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace chongzai{    class Program    {        static void Main(string[] args)        {            Program p = new Program();            p.run();        }        void run()        {            int arg1 = 10;            float arg2 = 12.5f;            int arg3 = 30;            dowork(arg1, arg2);            dowork(arg1, arg2, arg3);            dowork(arg2, arg3);        }        void dowork(int intdata, float floatdata, int moreintdata)        {            Console.WriteLine("intdata:{0},floatdata:{1},moredata:{2}", intdata, floatdata, moreintdata);        }        void dowork(int intdata, float floatdata)        {            Console.WriteLine("intdata:{0},floatdata:{1}", intdata, floatdata);        }        void dowork(float floatdata, int moreintdata)        {            Console.WriteLine("floatdata:{0},moreintdata:{1}", floatdata, moreintdata);        }    }}

也可以通過給參數賦上預設值來進行重載，注意沒有預設值的參數寫在前面，有預設值的參數寫在後面

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace chongzai{    class Program    {        static void Main(string[] args)        {            Program p = new Program();            p.run();        }        void run()        {            int arg1 = 10;            float arg2 = 12.5f;            int arg3 = 30;            dowork(arg1);            dowork(arg1, arg2);            dowork(arg1, arg2, arg3);            dowork();        }        void dowork(int intdata=0, float floatdata=0.0f, int moreintdata=0)        {            Console.WriteLine("intdata:{0},floatdata:{1},moredata:{2}", intdata, floatdata, moreintdata);        }     }}

還也通過指定參數的傳值來重載

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace chongzai{    class Program    {        static void Main(string[] args)        {            Program p = new Program();            p.run();        }        void run()        {            int arg1 = 10;            float arg2 = 12.5f;            int arg3 = 30;            dowork(arg1);            dowork(moreintdata:arg3);            dowork(arg1, arg2);            dowork(floatdata:arg2,moreintdata:arg3);            dowork(arg1, arg2, arg3);            dowork();        }        void dowork(int intdata=0, float floatdata=0.0f, int moreintdata=0)        {            Console.WriteLine("intdata:{0},floatdata:{1},moredata:{2}", intdata, floatdata, moreintdata);        }     }}