params

1。可变数量参数（相同类型）作为单个逻辑传给方法

 

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

namespace @params {     class Program     {         static void Main(string[] args)         {             double average = CalAverage(123.1,12,3.2,56);             double[] data = {3.2,5.6,33.3 };             Console.WriteLine(average);             double s = CalAverage(data);             Console.WriteLine(s);         }         static double CalAverage(params double[] values)         {             double sum = 0;             if (values.Length == 0)                             return sum;                         for (int i = 0; i < values.Length; i++)                             sum += values[i];                 return (sum / values.Length);            

        }     } }