Hi everyone, My assignment partner and i have been working on this for a while and we have hit a wall and we have been stuck for several hours. A couple of questions, please. 1) In the Airports class I am trying to get input data from a text file and put it inside the variables of an airport object that I'm going to create. 2) Then I'm going to try and store my Airport objects inside a map container with a key being the Airport code. This is what it looks like so far. This is my header file: Code: #ifndef AIRPORTS_ #define AIRPORTS_ #include <iostream> #include <string> #include <vector> #include <sstream> #include <iterator> #include <map> #include"Flights.h" using namespace std; class Airports{ std::istream& operator (std::istream&, Airport::Airport&); }; #endif /*AIRPORTS_*/ this is the CPP file: Code: #include <iostream> #include <string> #include "Airports.h" istream& Airports:: operator (istream& ins, Airport::Airports:: Airport& airport ){ // Notice how this operator does not need to be 'friend' to Airport string s; int h, m; // Get Flight Code ins >> s; airport.setCode( s ); // Get scheduled arrival time ins >> h; if (ins.get() != ':') { ins.setstate( ios::badbit ); return ins; } ins >> m; airport.setMinimumConnect( (double)(h % 24) + (m / 60.0) ); // Get the description for humans ins >> ws; getline( ins, s ); airport.setDescription( s ); return ins; } // This is where the list of airline flight data is stored using airport code (to access airport information) map<Airport::Airport> airport_flights; map<Airport,string> mymap; map<Airport,string>::iterator it; // How many data do we need to read? int num_flights; cin >> num_flights; cin.ignore( std::numeric_limits <std::streamsize> ::max(), '\n' ); // Read exactly that many copy_n( std::istream_iterator <Airport::Airport> ( cin ), num_flights, std::back_insert_iterator <Airport::Airport> ( airport_flights ) ); the above code doesn't compile. these are the classes that the Airports class is using. the code below does compile and works: Code: #include "Flights.h" //_____________Start Implementation of Flight class________________\\ /*Start House-keeping functions for Flight Class * Default constructor * */ Flight:: Flight (){ //debug statement cout<< "we are in the construtor with Default arguments\n"; setOrigin(""); setDestination(""); setDepartureTime(0); setDuration(0) ; } /* Constructor for flight object * * */ Flight::Flight(const string &orig ,const string &destin ,const string &dep, const string &dur ){ //debug statement cout<< "we are in the construtor with arguments\n"; setOrigin(orig); setDestination(destin); setDepartureTime(dep); setDuration(dur); } /* copy constructor for flight object * * * FlightsTL:: Flight:: Flight(const Flight& rhs){ } */ /**destructor for flight object * * */ Flight:: ~Flight(){ } //end House-keeping functions \\ //_____________Start other functions____________________________\\ /* Equals operation * */ Flight& Flight::operator=(const Flight& rhs){ return *this; } /* get origin * */ string Flight::getOrigin() const{ return org; } /* get destination * */ string Flight::getDestination()const{ return dest; } /* get departure time * */ string Flight:: getDepartureTime()const{ return depTime; } /* get duration * */ string Flight:: getDuration ()const{ return dura; } /* set origin * */ void Flight:: setOrigin(string t ){ org = t; } /* set destination * */ void Flight:: setDestination(string s){ dest =s; } /* set departure time * */ void Flight:: setDepartureTime(string c){ depTime = c; } /* get duration * */ void Flight:: setDuration(string d){ dura = d; } /* set all * */ void Flight:: setAll(string a,string b,string c,string d){ setOrigin(a); setDestination(b); setDepartureTime(c); setDuration(d) ; } /** ToString to display flight information * */ string Flight:: toString()const{ string s; //double depT = getDepartureTime(); // double durA = getDuration(); // convert double to string // char deptStr[50]; // sprintf(deptStr,"%g",depT); // convert to string // char durStr[50]; // sprintf(durStr,"%g",durA); // print all Flight information s=getOrigin() +"\t"+ getDestination() + "\t"+ getDepartureTime() + "\t"+ getDuration() +"\n" ; return s; } //__________________end of Flight implementation_____________\\ //__________________Start of of FlightsTL implementation_____________\\ //Start House-keeping functions /*Default constructor * */ Airport:: Airport (){ setCode(""); setMinimumConnect(0); setDescription(""); } /* Constructor for Airport object * * */ Airport:: Airport(const string& code, const double& minCon, const string& description){ setCode(code); setMinimumConnect(minCon); setDescription(description); } /* copy constructor for Airport object * * */ // Airport(const Airport& rhs); /**destructor for Airport object * * */ Airport:: ~Airport(){ } //end House-keeping functions\\ //_________________Start of other Airport functions___________________________\\ /* Equals operation * */ Airport& Airport:: operator=(const Airport& rhs){ return *this; } /* get minimum connection * */ double Airport:: getMinimumConnectionTime()const{ return minConnect; } /* get Code * */ string Airport:: getCode()const{ return code; } /* get description * */ string Airport:: getDescription()const{ return description; } /*get number of Flights * */ int Airport:: getFlightsNum(){ return FlightsNum; } /* set minimum connection time * */ void Airport:: setMinimumConnect (double a){ minConnect =a; } /* set code * */ void Airport:: setCode (string b){ code = b; } /* set description * */ void Airport:: setDescription (string c){ description = c; } /* set all * */ void Airport:: setAll (string a,double b,string c){ setMinimumConnect(b) ; setCode(a); setDescription(c); } void Airport::addFlight(const Flight& Flight){ Flights.push_back(Flight); FlightsNum++; } /*add Flight * */ void Airport:: addNewFlight(const string& origin , const string& destination,const string& depTime, const string& duration){ Flights.push_back(Flight(origin,destination,depTime,duration)); FlightsNum++; } /** ToString to display all flights and thier information * */ string Airport:: toString(){ vector<Flight>::iterator find; string str; if (getFlightsNum() == 0) { return "Nothing to show no Flights" ; } for(find = Flights.begin(); find != Flights.end(); find++){ str+=(*find).toString(); } string s; double mCon = getMinimumConnectionTime(); // convert double to string char mConStr[50]; sprintf(mConStr,"%g",mCon); // print all Airport information s=getCode() +"\t"+ mConStr + "\t"+ getDescription() + "\n" ; return str + s; } //__________________end of FlightsTL Implementation______________\\ //I'm thinking of adding remove(), and clear() and add via text Thanks for your help, everyone Sandy
