参数数组params

浏览数：26 / 时间：2015年06月08日

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace nange_1
{
    class A
    {
        public void listint(params int[] array)
        {
            for (int i = 0; i < array.Length; i++)
            { array[i] = array[i] * 10;
             Console.WriteLine("{0}", array[i]);
            }
        }

    }




    class Program
    {
        static void Main(string[] args)
        {
            int a = 1, b = 2, c = 3;
            A objA = new A();
            objA.listint(a, b, c);
            Console.WriteLine(a + " " + b + " " + c);
            Console.ReadLine();
        }

    }
}

从输出结果上看实参的值没有受形参的影响！

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace nange_1
{
    class A
    {
        public void listint(params int[] array)
        {
            for (int i = 0; i < array.Length; i++)
            { array[i] = array[i] * 10; 
              Console.WriteLine("{0}",array[i]); 
            }
        }

    }




    class Program
    {
        static void Main(string[] args)
        {
            int []array=new int[]{1,2,3};
            A objA = new A();
            objA.listint(array);
            foreach(int x in array)
            Console.WriteLine("{0}",x);//输出每个元素
            Console.ReadLine();
        }

    }
}

//通过实参的值改变了形参的值