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Question

因此，我被任命是创建基本的酒店管理系统。虽然我对工作总体上满意，但我已经意识到，在函数用户（）输入超过2个数据之后，在start（）之后选择break（）将以某种方式调用update（）函数，而应将其退出程序。我已经包含了整个代码，因为我没有确切的想法出现在哪里。请帮助

 #include <iostream>
 #include <iomanip>
 #include <string>
 #include <cstdlib>
 #include <fstream>
 #include<conio.h>
 #include<stdio.h>
 using namespace std;
 void start();
 void admin();
 void user();
 void update();
 void display();
 void input();
 void data();
 void header();
 void slogan();
 int x=15,y=15;
 int num1,num2,num3,num4;
 int p=x, q=y;
 int f,h,k;
 ofstream file;
 string customer;
 ifstream inputFile;
 string inventory;
struct Info
{
string Name;
string idNum;
string contact;
Info*link;
 }
*head, *tail;

 int main()
{
header();
return 0;
 }
    void header()
{

cout<<"ntt    ##               ##   ########   ##         #######    #######    ###       ###   ########    ";
cout<<"ntt     ##             ##    ##         ##        ##         ##     ##   ####     ####   ##          ";
cout<<"ntt      ##           ##     ##         ##        ##         ##     ##   ## ##   ## ##   ##          ";
cout<<"ntt       ##    #    ##      #######    ##        ##         ##     ##   ##  ## ##  ##   #######     ";
cout<<"ntt        ##  ###  ##       ##         ##        ##         ##     ##   ##   ###   ##   ##          ";
cout<<"ntt         #### ####        ##         ##        ##         ##     ##   ##         ##   ##          ";
cout<<"ntt          ##   ##         ########   ########   #######    #######    ##         ##   ########    n";

cout<<"ntt            ########    #######       ##    ##    ######    ########   ########   ##      ";
cout<<"ntt               ##      ##     ##      ##    ##   ##    ##      ##      ##         ##      ";
cout<<"ntt               ##      ##     ##      ##    ##   ##    ##      ##      ##         ##      ";
cout<<"ntt               ##      ##     ##      ########   ##    ##      ##      #######    ##      ";
cout<<"ntt               ##      ##     ##      ##    ##   ##    ##      ##      ##         ##      ";
cout<<"ntt               ##      ##     ##      ##    ##   ##    ##      ##      ##         ##      ";
cout<<"ntt               ##       #######       ##    ##    ######       ##      ########   ########n";
cout<<"ntt  #######    ######    ##         ##   ########    ######    #######     ###     ##   ##    ###### ";
cout<<"ntt ##         ##    ##   ##         ##   ##         ##    ##   ##    ##    ####    ##   ##   ##    ##";
cout<<"ntt ##         ##    ##   ##         ##   ##         ##    ##   ##    ##    ## ##   ##   ##   ##    ##";
cout<<"ntt ##         ##    ##   ##         ##   #######    ##    ##   #######     ##  ##  ##   ##   ##    ##";
cout<<"ntt ##         ########   ##         ##   ##         ##    ##   ##   ##     ##   ## ##   ##   ########";
cout<<"ntt ##         ##    ##   ##         ##   ##         ##    ##   ##    ##    ##    ####   ##   ##    ##";
cout<<"ntt  #######   ##    ##   ########   ##   ##          ######    ##     ##   ##     ###   ##   ##    ##nnn";
cout<<"ntt****************************************************************************************************nnnnn";

system("pause");
start();
     }
  void start()
       {
 int choose;
system("cls");
slogan();
cout<<"nntttWELCOME nnn";
cout<<"[1].ADMIN nn";
cout<<"[2].USER nn";
cout<<"[3].EXIT nn";
cout<<"SELECTION : ";
   cin>>choose;
switch(choose)
{
    case 1:
    system("cls");
    admin();
    break;
    case 2:
    system("cls");
    user();
    break;
    case 3://the problem lies here, where it should exit the program//
    cout <<"THANK YOU FOR USING THE PROGRAM"<<endl;
    slogan();
    system("cls");
    break
    default:
    system("cls");
    start();
}
  }
    void slogan()
   {

cout<<"nttttHOTEL CALIFORNIAn";
cout<<"ttt-------------------------------n";
cout<<"ttttHEAVEN ON EARTHnn";

   void admin()
      {
  system("cls");
  slogan();
  cout<<"nnnt[1].ROOM AVAILABLEnn";
  cout<<"t[2].ONLINE VIEWnn";
  cout<<"t[3].WALK INnn";
  cout<<"t[4].BACKnn";
  cout<<"tSELECTION : ";
  cin>>num2;
   switch(num2)
{
    case 1:
    system("cls");
    k=p+q;
    if (k==0){
    cout << "SORRY OUR ROOMS ARE FULL hRIGHT NOW"<< endl;
    cout << "PLEASE COME BACK LATER"<< endl;
        system("pause");
        system("cls");
        start();

    }
    cout << "Room available " << k << endl;
    cout << "Small: " << p << endl;
    cout << "Large: " << q << endl;

    system("pause");
    admin();

    case 2:
    system("cls");
    display();
    break;
    case 3:
    system("cls");
    input();
    break;
    case 4:
    system("cls");
    start();
    break;
    default:
    system("cls");
    start();
  }
  }

    void input()
    {
      cout<<"nnPLEASE ENTER YOUR NAME: ";
  cin>>std::ws;
  getline( cin, customer );
  customer += ".txt";
  file.open( customer.c_str() );
 system("cls");
      slogan();
   cout<<"nnttttCHOOSE ROOM :nn";
cout<< "[1].LARGE(FOR MORE THAN 3 PEOPLE)********RM200 per night"<<endl;
cout <<"[2].SMALL(FOR LESS THAN 3 PEOPLE)********RM100 per night"<<endl;
cout <<"FOR 3 PEOPLE BEST TAKE LARGE"<<endl;

cout<<"nn";
cin>>num3;
system("cls");
if (num3==1){
    q--;
    data();
    system("pause");
    file.close();
    start();
}else if (num3==2){
    p--;
    data();
    system("pause");
    file.close();
    start();
} else if (num3!=1 && num3!=2){
cout << "WRONG INPUT GIVEN" <<endl;
system("pause");
system("cls");
input();
}
}
void data()
 {   int date, month,store,year=2018;
struct Info*temp;
head = NULL;
tail = NULL;
    cout << "HOW MANY NIGHTS WILL YOU BE STAYING?" << endl;
    cin>>f;
    if(f>30 || f<0){
    cout << "NOT ALLOWED" <<endl;
    system("pause");
    system("cls");
    start();
    }
    h=200 * f;
    cout << "nnTotal: RM" << h << endl;
    file<< "Total: RM " << h ;
    system ("pause");
    system("cls");
  cout<<"nnxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxn";
cout<<"nttttFOR THE YEAR 2018n";
cout<<"ttt-------------------------------n";
cout<<"nttttONE MONTH=30 DAYSnn";
cout<<"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxn";
    cout<<"tttENTER CHECK IN DATE(1-30)nn";
    cin>>date;
    if (date>30 || date<0){

        cout <<"CANNOT COMPREHEND" << endl;
           system("pause");
        admin();
    }
    cout << "tttENTER CHECK IN MONTH(1-12)" <<endl;
    cin>>month;
    if (month>12 || month <0){
        cout <<"CANNOT COMPREHEND" << endl;
         system("pause");
        admin();
    }
    file << "CHECK IN ON: " <<date<<"/"<<month<<"/"<<year<<endl;
    store=date+f;
    if(store>30){
        store=store-30;
        month=month+1;
        if (month>12){
            month=month-12;
            year=year+1;
        }
    }
    file <<"CHECH OUT ON: " << store<<"/"<<month<<"/"<<year<<endl;
    Info *a=new Info;
    cout<<"ENTER NAME(SAME AS PREV)"<<endl;
    cin>>std::ws;
    getline(cin, a->Name);
    cout<<"n";
    a->link=NULL;
    if (head == NULL)
    {
        head = a;
        tail = a;
    }
    else
    {
        tail->link =a;
        tail= a;
    }
    Info *b=new Info;
    cout<<"ENTER IC "<<endl;
    cin>>std::ws;
    getline(cin, b->idNum);
    cout<<"n";
    b->link=NULL;
    if (head == NULL)
    {
        head = b;
        tail = b;
    }
    else
    {
        tail->link =b;
        tail= b;
    }
    Info *c=new Info;
    cout<<"ENTER PHONE NUMBER "<<endl;
    cin>>std::ws;
    getline(cin, c->contact);
    cout<<"nn";
    c->link=NULL;
          if (head == NULL)
    {
        head = c;
        tail = c;
    }
    else
    {
        tail->link =c;
        tail= c;
    }
    temp = head;
   while(temp!=NULL)
{
    file<<"n"<<temp->Name;
    file<<"n"<<temp->idNum;
    file<<"n"<<temp->contact<<" nn";
    temp = temp->link;
}
 cout<<"nDONEnn";
   }
   void user(){
 system("cls");
   slogan();
      cout<<"nnnt[1].REGISTERnn";
    cout<<"t[2].UPDATEnn";
   cout<<"t[3].BACKnn";
   cout<<"t[4].EXITnn";
    cout<<"tSELECTION : ";
  cin>>num4;
     switch(num4)
{
    case 1:
    system("cls");
    cout << "Room available " << p+q << endl;
    cout << "Small: " << p << endl;
    cout << "Large: " << q << endl;
    system("pause");
    system("cls");
    input();
    case 2:
    system("cls");
   update();
    break;
    case 3:
    system("cls");
    start();
    break;
    case 4:
    system("cls");
    break;
    default:
    system("cls");
    start();
    }
     }
     void display()
      {
  slogan();
      cout<<"nnENTER YOUR NAME : ";
      cin>>customer;
  inputFile.open((customer+".txt").c_str());
   if (inputFile)
      {
   getline(inputFile, customer);
   while (inputFile)
   {
      cout << customer << endl;
      getline(inputFile, customer);
   }

   inputFile.close();
   system("pause");
    admin();
  }
   else
  {
    cout << "NO DATAn";
   system("pause");
   admin();
  }
   }
   void update()//instead it jumps toward here even after breaking//
{
 slogan();
 cout<<"nn[1] UPDATE BOOKINGn";
 cout<<"nn[2] CANCEL BOOKINGn";
cout<<"nnCHOOSE: ";
cin>>num1;
   system("cls");
      switch(num1)
   {
  case 1:
cout<<"nnttt---   UPDATE   ---nn";
cout<<"nntENTER YOUR NAME TO CHECK IF DATA EXIST : ";
cin>>std::ws;
//inputFile.open((customer+".txt").c_str());
    getline( std::cin, customer );
   if(inputFile){
system("cls");
input();
break;
    }   else
{
cout<< "nnt!NO DATA!" <<endl;
system("pause");
user();
}

   case 2:
cout<<"nnttt---   CANCEL BOOKING ONLINE   ---nn";
cout<<"nntENTER YOUR NAME : ";
cin>>customer;
inputFile.open((customer+".txt").c_str());
getline( inputFile, customer );
if(inputFile){
remove((customer + ".txt").c_str());
cout<<"nntBOOKING CANCEL";
cout<<"nntINFO DELETEDnn";
cout<<"nntBYE BYEnn";
system("pause");
start();
break;
   }   else
{
cout<< "nnt!NO DATA!" <<endl;
system("pause");
start();
   }
default:
    system("cls");
    start();
       }
  }

我认为，唯一相关的功能是user（）和update（），因为如果我删除了update（）函数，则不会开始调用任何其他函数。

Answer 1

您忘了添加一个";"在第110行的中断代码