我正在尝试使用C ++构建酒店预订程序。但是，我有一个问题。我不断收到上述错误消息，但似乎找不到修复程序。
请提供一些帮助。任何事情将不胜感激。以下是我到目前为止所写的内容。
expandItem() {
this.isCollapsed = true
}
答案 0 :(得分：0)
#include<string>
#include<iostream>
#include<fstream>
#include<iomanip>
using namespace std;
class HotelRoom
{
private:
int roomnum; // Room numbers
int roomcap; // Room capacity
int roomoccuoystst = 0;
int maxperperroom;
double dailyrate;
public:
HotelRoom()
{
roomcap = 0;
maxperperroom = 2;
dailyrate = 175;
}
int gettotal = 0;
int gettotallist = 0;
string room;
string guestroom, message;
void viewrooms()
{
char viewselect, back;
cout << "Which room list would you like to view ?. 1 - Add rooms, 2 - Reserved rooms : ";
cin >> viewselect;
switch (viewselect)
{
case '1':
viewaddromm();
break;
case '2':
viewresromm();
break;
default:
cout <<
"Please select from the option provided or go back to the main menu. 1 - view rooms, 2 - to the mail menu or any other key to exit the program : ";
cin >> back;
switch (back)
{
case '1':
viewrooms();
break;
case '2':
menu();
break;
default:
exitpro();
}
}
}
void viewresromm()
{
string roomtochange, items;
string guestroomdb;
// int newaccupancy;
// char decisionmade,savinf;
string fname, lname, nationality;
string checkaddroom;
ifstream getdatafromaddroom; // creation of the ifstream object
getdatafromaddroom.open("reserveroom.out");
if (getdatafromaddroom.fail()) // if statement used for error
// checking
{
cout << "Could not open file" << endl; // message that will be
// printed if the program
// cannot open the file
return;
}
cout << endl;
cout << "First Name" << '-' << "Last Name" << '-' << "Nationality" << '-' << "Guest(s)" <<
'-' << "Room #" << endl;
cout << "-------------------------------------------------------" << endl;
// string items;
while (!getdatafromaddroom.eof())
{
// getdatafromaddroom
// >>fname>>lname>>nationality>>occup>>guestroomdb;
getline(getdatafromaddroom, items);
// cout<<setw(5)<<fname<<' '<<setw(10)<<lname<<'
// '<<setw(10)<<nationality<<' '<<setw(10)<<occup<<'
// '<<setw(9)<<guestroomdb<<endl;
gettotallist++;
if (getdatafromaddroom.eof())
break;
cout << items << endl;
}
for (int getlist = 0; getlist < gettotallist; getlist++)
{
cout << items << endl;
// cout<<setw(5)<<fname<<' '<<setw(10)<<lname<<'
// '<<setw(10)<<nationality<<' '<<setw(10)<<occup<<'
// '<<setw(9)<<guestroomdb<<endl;
}
}
void viewaddromm()
{
// int occup,rmchoose,up;
string roomtochange;
string guestroomdb;
// int newaccupancy;
// char decisionmade,savinf;
string fname, lname, nationality;
string checkaddroom;
fstream getdatafromaddroom; // creation of the ifstream object
getdatafromaddroom.open("addroom.out");
if (getdatafromaddroom.fail()) // if statement used for error
// checking
{
cout << "Could not open file" << endl; // message that will be
// printed if the program
// cannot open the file
return;
}
cout << endl;
cout << "First Name" << '-' << "Last Name" << '-' << "Nationality" << '-' << "Guest(s)" <<
'-' << "Room #" << endl;
cout << "-------------------------------------------------------" << endl;
string items;
while (!getdatafromaddroom.eof())
{
// getdatafromaddroom
// >>fname>>lname>>nationality>>occup>>guestroomdb;
getline(getdatafromaddroom, items);
// cout<<setw(5)<<fname<<' '<<setw(10)<<lname<<'
// '<<setw(10)<<nationality<<' '<<setw(10)<<occup<<'
// '<<setw(9)<<guestroomdb<<endl;
gettotallist++;
if (getdatafromaddroom.eof())
break;
cout << items << endl;
}
for (int getlist = 0; getlist < gettotallist; getlist++)
{
cout << items << endl;
// cout<<setw(5)<<fname<<' '<<setw(10)<<lname<<'
// '<<setw(10)<<nationality<<' '<<setw(10)<<occup<<'
// '<<setw(9)<<guestroomdb<<endl;
}
}
void exitpro()
{
cout << "Program closing......Goodbye" << endl;
// system("Pause");
exit(0);
}
void Addroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
void reserveroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
void modifyroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
void menu()
{
while (true)
{
char menuchoice;
cout << "[-------------------------------------------------------]" << endl;
cout << "[-Welcome to the hotel booking and reseration menu-]" << endl;
cout << "[--------------------------------------------------------]" << endl;
cout << setw(30) << "Addroom -- 1" << endl;
cout << setw(30) << "Reserve a room -- 2" << endl;
cout << setw(30) << "Modify a room -- 3" << endl;
cout << setw(30) << "View rooms -- 4" << endl;
cout << setw(30) << "Exit -- 5" << endl;
cin >> menuchoice;
switch (menuchoice)
{
case '1':
Addroom();
break;
case '2':
reserveroom();
break;
case '3':
modifyroom();
break;
case '4':
viewrooms();
break;
case '5':
exitpro();
}
}
}
};
int main()
{
try
{
HotelRoom room;
room.menu();
}
catch(std::logic_error * ex)
{
std::cout << ex->what();
}
}
该项目还有很多其他事情要做。我已经修复了您专门询问的部分，现在修复了带有某些适当诊断的runninng应用程序。我不会深入了解这种语言的工作方式，但是您有一些没有隐含的功能，缺少返回类型，只是一些一般的逻辑错误，例如在确定文件未打开后尝试使用文件。它现在开始运行，您可以清楚地知道需要完成什么。您还有几个未使用的变量。
我最少添加了
void Addroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
void reserveroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
void modifyroom()
{
std::string mess = __func__;
mess += " is not yet implimented.";
throw new std::logic_error(mess.c_str());
}
，然后返回菜单类型。 `void menu（）
您不能调用尚未编写的函数，并且所有函数都具有返回类型，即使它们什么也不返回。
祝你好运！