C#关于params的用法（使用数量可变的参数）

有些方法需要传递个数不定的值进行运算。比如求最小值的方法。除了用容器外，还可以使用params来做

例子如下:

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

namespace cxx
{
    class Min
    {
        public int MinVal(params int[] nums)
        {
            int m;

            if (nums.Length == )
            {
                Console.WriteLine("Error, no data is found ");
                return ;
            }

            m = nums[];
            for (int i = ; i < nums.Length; i++)
                if (nums[i] < m) m = nums[i];
            return m;
        }

        class TestParams
        {
            static void Main()
            {
                Min ob = new Min();

                int min;
                int a = , b = ;

                //call with 2 values
                min = ob.MinVal(a, b);
                Console.WriteLine("Minimum is " + min);

                //call with 7 values
                int[] args = new int[] { , , , , , ,  };
                min = ob.MinVal(args);
                Console.WriteLine("Minimum is " + min);
                Console.WriteLine(@"my name is shoneworn.
welcome to my blog: www.cnblogs.com/shoneworn.
注意看@的用法，是按照自己排版输出的。");
                Console.ReadKey();

            }

        }
    }

运行效果: