订票

using System;
public class book_ticket
{
 public static void Main()
 {
  int[] A=new int [10];
  int next;
  Console.WriteLine ("欢迎使用南方航空公司订票系统:");
  Console.WriteLine ("1预订头等仓(1-5号座位)\n2预订经济仓(6-10号座位)\n-1退出");
  do
  {
   Console.WriteLine ("请选择:");
   next=int.Parse (Console.ReadLine ());
   switch(next)
   {
    case 1:
     Console.WriteLine ("请输入座位号:");
     int next1=int.Parse (Console.ReadLine ());
     if((next1<1)||(next1>5))
     {
      Console.WriteLine ("您的输入有误,请重新输入(头等仓的座号范围是1-5)");
      continue;
     }
     if(A[next1-1]==1)
     {
      Console.WriteLine ("抱歉...该座位{0}已被预订!",next1);
     }
     else
     {
      A[next1-1]=1;
      Console.WriteLine ("ok...预订成功,您的座位是{0}号.",next1);
     }
     break;
    case 2:
     Console.WriteLine ("请输入座位号:");
     int next2=int.Parse (Console.ReadLine ());
     if((next2<6)||(next2>10))
     {
      Console.WriteLine ("您的输入有误,请重新输入(经济仓的座号范围是6-10)");
      continue;
     }
     if(A[next2-1]==1)
     {
      Console.WriteLine ("抱歉...该座位{0}已被预订!",next2);
     }
     else
     {
      A[next2-1]=1;
      Console.WriteLine ("ok...预订成功,您的座位是{0}号.",next2);
     }
     break;
    case -1:
     break;
    default:
     break;
   }
  }while(next!=-1);
 }
}