airlinereservation.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 13.11 AirlineReservation.cpp
// Application that enables a user to reserve a seat on a flight
// and displays a boarding ticket.
#include <iostream> // required to perform C++ stream I/O

using namespace std; // for accessing C++ Standard Library members

// function main begins program execution
int main()
{
   // define variables and create array to represent seats
   int choice; // seat number that the user selects
   char response; // whether user will take a different seat

   // continue until plane is full
   while ( people < ( SEATS - 1 ) ) {

      // display menu of options
      cout << "\nSelect one of the following options" << endl
           << "1 - \"First class\"" << endl
           << "2 - \"Economy\"" << endl
           << "? ";
      cin >> choice; // get user's choice

      // if user selects first class
      if ( choice == 1 )
      {
         // if there are seats available, assign a seat
         if ( !plane[ firstClass ] && firstClass <= 5 )
         {
            cout << "\nYour seat assignment is " << firstClass
                 << " in the first class section." << endl;

            // indicate that seat is taken, then increment firstClass

         } // end if

         // if no first class seats, but economy seats are available
         // ask if passenger would like to sit in economy section
         else if ( firstClass > 5 && economy <= 10 )
         {
            cout << "\nThe first class section is full.\n"
                 << "Would you like to sit in the economy"
                 << " section (Y or N)? ";
            cin >> response; // store response

            // if economy is suitable, assign seat in economy section
            if ( response == 'Y' || response == 'y' )
            {
               cout << "\nYour seat assignment is " << economy
                    << " in the economy section." << endl;

               // indicate that seat is taken, then increment people

            } // end if

            // if economy seat not suitable display next departure
            else
            {
               cout << "\nNext flight leaves in 3 hours." << endl;
            } // end inner else

         } // end outer else

         // if no economy seats are available, display next departure
         else
         {
            cout << "\nNext flight leaves in 3 hours." << endl;
         } // end else

      } // end outer if

      // if user selects economy
      else if ( choice == 2 )
      {
         // if seats are available, assign one
         if ( !plane[ economy ] && economy <= 10 )
         {
            cout << "\nYour seat assignment is " << economy
                 << " in the economy section." << endl;

            // indicate that seat is taken, then increment people

         } // end if

         // if only first class seats are available,
         // ask if first class is suitable and assign seat
         else if ( economy > 10 && firstClass <= 5 )
         {
            cout << "\nThe economy section is full." << endl
                 << "Would you like to sit in the first class"
                 << " section (Y or N)? ";
            cin >> response; // store response

            if ( response == 'Y' || response == 'y')
            {
               cout << "\nYour seat assignment is " << firstClass
                  << " in the first class section.\n";

               // indicate that seat is taken,
               // then increment firstClass

            } // end if

            // if first class not suitable, print next departure
            else
            {
               cout << "\nNext flight leaves in 3 hours.\n";
            } // end inner else

         } // end inner else if

         // if no seats left, print next departure
         else
         {
            cout << "\nNext flight leaves in 3 hours.\n";
         } // end else

      } // end else if

      // otherwise, user entered invalid number
      else
      {
         cout << "\nError: You entered an invalid number. "
              << "Please enter 1 or 2." << endl;
      } // end outmost else

   } // end while

   cout << "\nAll seats for this flight are sold." << endl << endl;

   return 0; // indicates successful termination

} // end function main


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