C#基础

函数重载

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using System; using System.Collections.Generic; using System.Linq; using System.Text;   namespace exam {     class Program     {         /// <summary>         /// 函数重载         /// 函数名相同，参数类型或者参数个数不同         /// </summary>         /// <param name="args"></param>         static void Main(string[] args)         {             Sayhello("Tom");             Sayhello(20);             Console.ReadKey();         }         static void Sayhello(string name)         {             Console.WriteLine("hello,{0}",name);         }         static void Sayhello(int age)         {             Console.WriteLine("u age is{0}", age);         }     } }