C++ 如果有其他程序，则切换程序
//我的程序太长并且有错误。我想让它简单易读。如何在切换程序中更改它？？请帮帮我=C++ 如果有其他程序，则切换程序,c++,c++builder,C++,C++builder,//我的程序太长并且有错误。我想让它简单易读。如何在切换程序中更改它？？请帮帮我= #include <iostream> using namespace std; int main () { int movie1; int movie2; int movie3; int seats; int price; int select; char response; cout<<"______Wellcome
#include <iostream>
using namespace std;
int main ()
{
int movie1;
int movie2;
int movie3;
int seats;
int price;
int select;
char response;
cout<<"______Wellcome to Strawberry Gold Cinema____\n"
<<"Now you are booking a ticket cinema and please choose your movie... ";
cout << "\nPress 1 for= Harry Potter \n"
<< "Press 2 for = Iron Man\n"
<<"Press 3 for = Romeo and Juliet\n";
cout<<"Enter your choice > ";
cin>>select;
if (select ==1 )
{
cout<<"The price of the ticket per seat is RM10.00\n"
<<"Please enter the number of seat ";
cin>>seats;
if (seats<=30)
{
price = 10 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout <<"Please choose movie 2 or movie 3\n"
<<"Enter your choice ";
cin>>select;
if (select == 2)
{
cout<<"The price of the ticket per seat is RM11.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 11 * seats;
cout<<"The total price is RM"<<price<<endl;
}
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout<<"The price of the ticket per seat is RM13.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 13 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Next movie in 5 hours...."<<endl;
}
else
cout << "Next movie in 5 hours.\n";
}
}
}
//for 2
if (select ==2 )
{
cout<<"The price of the ticket per seat is RM11.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 11 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout <<"Please choose movie 1 or movie 3\n"
<<"Enter your choice ";
cin>>select;
if (select == 2)
{
cout<<"The price of the ticket per seat is RM10.00"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 10 * seats;
cout<<"The total price is RM"<<price<<endl;
}
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout<<"The price of the ticket per seat is RM13.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 13 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Next movie in 5 hours...."<<endl;
}
else
cout << "Next movie in 5 hours.\n";
}
}
}
//for seat 3
if (select ==3 )
{
cout<<"The price of the ticket per seat is RM13.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 13 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout <<"Please choose movie 1 or movie 2\n"
<<"Enter your choice ";
cin>>select;
if (select == 1)
{
cout<<"The price of the ticket per seat is RM10.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 10 * seats;
cout<<"The total price is RM"<<price<<endl;
}
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Would like to choose another movie??\n"
<<"Section Y or N \n";
cout<<"Enter your choice = ";
cin>>response;
}
if ( toupper( response ) == 'Y' )
{
cout<<"The price of the ticket per seat is RM12.00\n"
<<"Please enter the number of seat";
cin>>seats;
if (seats<=30)
{
price = 12 * seats;
cout<<"The total price is RM"<<price<<endl;
}
else if (seats>=30)
{
cout<<"The movie is full.\n"
<<"Next movie in 5 hours...."<<endl;
}
else
cout << "Next movie in 5 hours.\n";
}
}
}
return 0;
}
根据经验，每当您发现自己复制和粘贴了一行或两行以上的代码时，您都应该停下来思考将代码重构为函数是否更干净
在本例中，您可以创建一个函数do_movie_specific_stuff，该函数将三部电影之间不同的数据作为其参数（如果三种切换情况之间有任何不同）。然后，switch语句中的每一个实例都是一个单独的语句：使用正确的参数调用该函数。根据经验，任何时候当您发现自己复制和粘贴了一行或两行以上的代码时，您都应该停下来思考，将代码重构为函数是否更干净
在本例中，您可以创建一个函数do_movie_specific_stuff，该函数将三部电影之间不同的数据作为其参数（如果三种切换情况之间有任何不同）。然后，switch语句中的每种情况都是一个单独的语句：使用正确的参数调用该函数。我建议您将逻辑放入循环中，并将逻辑拆分为函数或类（如果您熟悉的话）。类似的东西这是未编译/未测试的半伪代码。。。给你一个想法：
bool done = false;
do
{
cout << "Please choose a move (1, 2, or 3)" << endl;
cin >> movieId;
double price = getMoviePrice(movieId);
cout << "The price of the movie is: " + price << endl;
cout << "How many seats" << endl;
cin >> seats;
int availableSeats = getAvailableSeats(movieId);
// and so on... If the user indicates they want to quit, just set done to true!
} while (!done)
如果您需要跟踪用户已经尝试过的电影，您可以这样做，您只需在某个地方跟踪，并在逻辑中处理它。我建议将您的逻辑放入一个循环，并将逻辑分解为函数或类（如果您熟悉的话）。类似的东西这是未编译/未测试的半伪代码。。。给你一个想法：
bool done = false;
do
{
cout << "Please choose a move (1, 2, or 3)" << endl;
cin >> movieId;
double price = getMoviePrice(movieId);
cout << "The price of the movie is: " + price << endl;
cout << "How many seats" << endl;
cin >> seats;
int availableSeats = getAvailableSeats(movieId);
// and so on... If the user indicates they want to quit, just set done to true!
} while (!done)
如果你需要跟踪用户已经尝试过的电影，你可以这样做，你只需要在某个地方跟踪，并在逻辑中处理它。你展示的代码是纯线性代码问题的一个很好的例子：它根本不起作用 提示：我将创建三个函数来处理每部电影，或者更可取的是，创建一个通用函数来处理所有电影，该函数将从某个类获取其数据：
class Movie {
std::wstring name;
int seats;
int soldSeats;
int pricePerSeat;
};
您展示的代码是纯线性代码问题的一个很好的例子：它根本不起作用 提示：我将创建三个函数来处理每部电影，或者更可取的是，创建一个通用函数来处理所有电影，该函数将从某个类获取其数据：
class Movie {
std::wstring name;
int seats;
int soldSeats;
int pricePerSeat;
};
如果你停止放映这两部糟糕的电影，只放映《钢铁侠》，你会删掉2/3的代码。@James McNellis，但是。。。我喜欢哈利·波特更重要的是，您需要小心输入操作。从流中提取可能会失败，您需要检查并处理失败。例如，如果用户为其电影选择输入hello，则hello不是有效的整数，select变量将保持未初始化状态，并且流上的失败状态将被设置。您可以使用if！测试流状态以查看提取是否成功！cin{/*句柄错误*/}。您还必须调用cin.clear来清除错误状态，并使用cin.ignore来忽略无效输入。这是家庭作业，不是吗？任务的哪一部分你遇到了麻烦？当你要求帮助和澄清时，你的导师说了什么？记住你已经为帮助付费了，所以你最好在有帮助的时候利用它。如果你停止放映这两部糟糕的电影而只放映《钢铁侠》，你将删掉代码的2/3。@James McNellis，但是。。。我喜欢哈利·波特更重要的是，您需要小心输入操作。从流中提取可能会失败，您需要检查并处理失败。例如，如果用户为其电影选择输入hello，则hello不是有效的整数，select变量将保持未初始化状态，并且流上的失败状态将被设置。您可以使用if！测试流状态以查看提取是否成功！cin{/*句柄错误*/}。您还必须调用cin.clear来清除错误状态，并使用cin.ignore来忽略无效输入。这是家庭作业，不是吗？任务的哪一部分你遇到了麻烦？当你要求帮助和澄清时，你的导师说了什么？请记住，您已经为该帮助支付了费用，因此您可以在它可用时利用它。我强烈怀疑此人的类尚未学习编写自定义函数。在早期，函数只被调用，而不是编写，int main仍然只是程序顶部的一个神奇咒语。我强烈怀疑这个人的类还没有学会编写自定义函数。早期，函数只被调用，而不是编写，int main仍然只是一个位于p顶部的魔法咒语 程序。