C#笔记之 函数可变参数

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 namespace OperatorChange
 6 {
 7     class Program
 8     {
 9         static void Main(string[] args)
10         {
11            Console.WriteLine ( newParams("{0}","23","32","32","33","34"));
12            Console.WriteLine ( newParams("{0}", "23", "32", "32", "33", "34","56","53","45","7")); 
13             Console.ReadKey();
14         }
15         static string newParams(params string[] values)//params参数中必须出现在最后一个
16         {
17             string sum = "";
18             for (int i = 0; i < values.Length-1;i++ )
19             {
20                 sum += values [i]+",";
21             }
22             if (values.Length > 0)
23             {
24                 sum+=values [values.Length -1];
25             }
26             return sum;
27 
28             
29         }
30     }
31 }