程序代码：

void firstWindow()
{int n;
    printf("\n\n\n\n\n\n");
    printf("                     **********欢迎使用患者住院管理系统**********\n");
    Sleep(1000);
    n=secondWindow();
    switch(n)
    {case 1:{int d;d=adminLand();
               switch(d)
    {case 1:{
   

            int m;m=adminWindow();
             switch(m)
            {case 1:AddtheInfo(&tListInfo);break;
             case 2:SavetheInfo(&tListInfo);break;
             case 3:ModifytheInfo(&tListInfo);break;
             case 4:FindtheInfo(&tListInfo);break;
             case 5:DeletetheInfo(&tListInfo);break;
             case 6:tkeychange();break;
             case 7:endWindow();break;
            }
    }
               break;
    default:endWindow(); break;}
    break;}

    case 2: {int e;e=doctorLand();
               switch(e)
               {   case 1:{ int f;f=doctorWindow();
                                          switch(f)
                                          {case 1:;break;
                                           case 2:;break;
                                           case 3:tkeychange();break;
                                           case 4:FindtheInfo(&tListInfo);break;
                                           case 5:endWindow();break;
                                          }
                             }break;
              

               case 2:{int n;n=nurseWindow();
                   switch(n)
                   {case 1:FindtheInfo(&tListInfo);break;
                   case 2:tkeychange();break;
                   case 3:endWindow();break;
                   }
                      }break;
               }
           }
    case 3:clear();break;
    case 4:ghostsave();break;
    case 5:endWindow();break;
    }
}