12.输入3个数，按照从小到大的顺序输出。

 

/*
 * Created by SharpDevelop.
 * User: Administrator
 * Date: 2011-7-11
 * Time: 11:54
 * 12.输入3个数，按照从小到大的顺序输出。
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;

namespace test13
{
 class Program
 {
  public static void Main(string[] args)
  {
   Console.WriteLine("Hello World!");
   
   // TODO: Implement Functionality Here
   Console.Write("Please input the one number: ");
   double num1 = double.Parse(Console.ReadLine());
   Console.WriteLine("Please input the second number: ");
   double num2 = double.Parse(Console.ReadLine());
   Console.WriteLine("Please input the third number: ");
   double num3 = double.Parse(Console.ReadLine());
   double num, one, second , third;
   one = num1;
   second = num2;
   third = num3;
   if (num1>num2)
   {
    num = num1;
    num1 = num2;
    num2 = num;
   }
   // now num1<num2
   if (num3<num1)
   {
    one = num3;
    second = num1;
    third = num2;
   }
   if (num3>num1&num3<num2)
   {
    one = num1;
    second = num3;
    third = num2;
   }
   if (num3>num2)
   {
    one = num1;
    second = num2;
    third = num3;
   }
   Console.WriteLine("{0},{1},{2}",one,second,third);
   //one is first
   
   
   Console.Write("Press any key to continue . . . ");
   Console.ReadKey(true);
  }
 }
}