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

namespace ConsoleApplication1
{
class Program
{
    static void Main(string[] args)
    {
        double[] height = new double[10];
        double sum=0,avger,her;
        for (int i = 0; i <= 9; i++)
        {
            Console.Write("请输入一个数:");
            height[i] = double.Parse(Console.ReadLine());
            sum = sum + height[i];
        }
        for (int i = 9; i >= 1; i–)
        {
            for (int b = 0; b <= i-1; b++)
            {
                if (height[i] < height[b])
                {
                    her = height[i];
                    height[i] = height[b];
                    height[b] = her;
                }
            }
        }
        avger=sum/10;
        Console.WriteLine("平均值为{0}", avger);
        for (int i = 0; i < height.Length; i++)
        {
            Console.Write("{0} ", height[i]);
        }
        Console.ReadKey();
    }
}
}

效果图: