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C#函数的重载

發布時間：2023/12/18 C# 29 豆豆

生活随笔收集整理的這篇文章主要介紹了 C#函数的重载小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

◆函數名必須相同方能構成函數重載;

◆函數返回值類型:可以相同,也可以不同(注意:函數的返回類型不足以區分兩個重載函數);

◆函數參數類型:必須不同;

◆函數參數個數:可以相同,可以不同

◆函數參數順序:可以相同,可以不同;

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using?System;??

using?System.Collections.Generic;??

using?System.Linq;??

using?System.Text;??

namespace?ConsoleApplication??

{??

????class?Circle??

????{??

?????????

????????private?const?float?PI?=?3.141526F;??

????????//1.沒有任何已知條件??

????????public?static?double?Area()??

????????{???

????????????Console.WriteLine("空空如也！");??

????????????return?0;??

??????????

????????}??

????????//2.已知圓心坐標??

????????public?static?double?Area(int?x1,?int?y1)??

????????{??

????????????Console.WriteLine("這是一個圓點，坐標為({0},{1})",x1,y1);??

????????????return?0;??

????????}??

????????//3.已知半徑??

????????public?static?double?Area(double?r)??

????????{??

????????????double?theArea;??

????????????theArea?=?PI?*?r?*?r;??

????????????return?theArea;??

????????}??

????????//4.已知圓心坐標和半徑??

????????public?static?double?Area(int?x1,?int?y1,?double?r)??

????????{??

????????????Console.WriteLine("這是一個圓點在({0},{1})半徑為{2}的圓",?x1,?y1,?r);??

????????????return?Area(r);??

??????????

????????}??

????????//5.已知圓心和圓周邊上的一點??

????????public?static?double?Area(int?x1,?int?y1,?int?x2,?int?y2)??

????????{??

????????????int?x?=?x2?-?x1;??

????????????int?y?=?y2?-?y2;??

????????????double?r?=?(double)Math.Sqrt(x*x+y*y);??

????????????Console.WriteLine("這是一個圓心在({0},{1}),圓周邊一點在({2},{3})的圓，圓的半徑為{4}",x1,y1,x2,y2,r);??

????????????return?Area(r);??

??????????

????????}??

????????static?void?Main(string[]?args)??

????????{??

????????????int?x1=2,x2=4;??????????//x坐標??

????????????int?y1=3,y2=5;??????????//y坐標??

????????????double?radius=3;????????//半徑??

????????????double?CircleArea?=?0;??

????????????CircleArea?=?Area();??

????????????Console.WriteLine("-->1.面積為{0}",CircleArea);??