List inside a List...?

Adidas (59)
How do I manage to create a new list inside an exist list and keep the ability to get to the secound list threu the first list...?
I want to use the <list> class...

thanks a lot...
coder777 (8450)
um std::list<std::list<obj> > l?
Adidas (59)
I'm afraid no ...

I don't understand the <list> idea at all :(
coder777 (8450)
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std::list<std::list<obj> > first_list;
std::list<obj> second_list;

obj o1;
second_list.push_back(o1); // store a copy of the obj in the second list
first_list.push_back(second_list); // store a copy of the second list in the first list

obj o2
first_list.back().push_back(o2); // with 'first_list.back()' you access the (last added) second list
// and with '.push_back(o2)' you store a second obj in the second list
does that help?
Adidas (59)
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#include <iostream>
#include <ostream>
#include <istream>
#include "GasStation.h"
#include <fstream>
#include <string>
#include <sstream>
#include <list>
using namespace std;

int main (int argc, char* argv[] )
{
	/*cout<<argc<<endl;*/

	list<Gas_station> lst; // Creates list // Creates list of argc-2 copies of Gas_station() the -2 is because first file is the exe file secound is the simulation and after comes the Stations informaitions. 
	for( int counter=0,counter_arg_v=1 ; counter< argc-1; counter++,counter_arg_v++ )
	{
		Gas_station Station1;
		lst.push_front(Station1);

		//list<T> lst(n, e); // Creates list of n copies of e. 

		char nameafter[40];

		string str98 ("Octan98");
		string str95 ("Octan95");
		string line  ;
		ifstream myfile (argv[counter_arg_v]); // open the txt file
		if (myfile.is_open())
		{
			while ( myfile.good() )//scan each row and do the right commands untill the end of the file
			{
				getline (myfile,line);
				if (line[0]!='#')
				{
					if(line[0]=='S') // to get the station name
					{
						std::string y;
						const std::string::size_type pos = line.find(":"); // after :
						if(pos != std::string::npos)
							y = line.substr(pos + 1);
						strcpy(nameafter,y.c_str());
						std::cout<<nameafter<<endl<<endl; // the name of the station got from file
						Station1.set_m_station_name(nameafter);//copy the name of the station from the txt file into the object		
					}

					else if(line[0]=='O')  //    Octan cheak ang get values of price
					{
						std::string part2;
						std::stringstream ss2(line);
						std::getline(ss2, part2, ',');
						if(part2.compare(str98)==0)
						{
							std::cout<<"Using "<<str98<<endl;
							getline(ss2,part2, ',');
							std::cout<<"Full service"<< part2<<endl;
							Station1.set_mFull_price(atof(part2.c_str())); //convert the string from string to int and assing

							getline(ss2,part2, ',');
							std::cout<<"Self service "<<part2<<endl<<endl;
							Station1.set_mSelf_price(atof(part2.c_str()));//convert the string from string to int and assing

						}
						else if(part2.compare(str95)==0)
						{
							std::cout<<"Using "<<str95<<endl;
							getline(ss2,part2, ',');
							std::cout<<"Full service"<< part2<<endl;
							Station1.set_m_Full_price(atof(part2.c_str()));//convert the string from string to int and assing

							getline(ss2,part2, ',');
							std::cout<<"Self service "<<part2<<endl<<endl;
							Station1.set_m_Self_price(atof(part2.c_str()));//convert the string from string to int and assing
						}
						else
						{
							std::cout<<"You enter a wrong fild of Fule , pleas try again"<<endl;
							exit(1);
						}
					}
					else //fullers list
					{
						list<FULER_INFO> lst2; //list of fulers in the station

						lst2.push_front(Station1.FULER_info);

						std::string part2;
						std::stringstream ss2(line);


						std::getline(ss2, part2, ',');
						std::cout<<"The car number is "<< part2<<endl;
						strcpy(Station1.FULER_info.car_id,part2.c_str());// copy the car id to fild

						std::getline(ss2, part2, ','); //copy the fuling kind 95/98
						std::cout<<"The fuling kind is "<< part2<<endl;
						if(part2[0]=='9')
						{
							if(part2[1]=='5')
								Station1.FULER_info.Octan_type=octan95;
						}
						else  if(part2[0]=='9')
						{
							if ((part2[1])=='8')
								Station1.FULER_info.Octan_type=octan98;
						}
						else
						{
							cerr<<"You enterd wrong value of fuel"<<endl;
							exit(1);
						}

						std::getline(ss2, part2, ','); // copy the number of liters feuled
						std::cout<<"The number of liters is "<< part2<<endl;
						Station1.FULER_info.num_of_liteRs=atof(part2.c_str());

						std::getline(ss2, part2, ',');
						std::cout<<"The fuling type is "<< part2<<endl<<endl;
						if(part2[0]=='F') //means full service is used
							Station1.FULER_info.SERVICE_TYPE_=FullService;
						else if (part2[0]=='S')//means self service is used
							Station1.FULER_info.SERVICE_TYPE_=SelfService;
						else
						{
							cout<<"You enter wrong service type"<<endl;
							exit(1);
						}

					} //else //fullers list
				}  //if (line[0]!='#')
			}//while ( myfile.good() )

		} //if (myfile.is_open())
		else std::cout << "Unable to open file"<<endl; 

		myfile.close();

		std::cout<<lst.size()<<endl;


	}//for(...)
	return 0;
}//main()


this is my code the 2 last problams is

1. I need to make a list of Station object's
2.I need to make a list of persons used the specific station in the object of the Station

my classes are 

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class Gas_station
{
private:

	char m_station_name [40];
	double m_Full_price95;
	double m_Self_price95;
	double m_Full_price98;
	double m_Self_price98;
	

public:
	Gas_station(char *name,int full_price,int self_price ); //constructor
	Gas_station();//default constructor
	void set_m_station_name(char* station_name); //set the name of the station from txt file to obj
	void set_m_Full_price(double priceF95);//set the price for full price 95
	void set_m_Self_price(double priceS95);//set the price for self price 95
	void set_mFull_price(double priceF98);//set the price for full price 98
	void set_mSelf_price(double priceS98);//set the price for self price 98
	FULER_INFO FULER_info;//conection to save the fulers
	void PrintStation() const ;
};

class Person_using_the_Gas_station
{
private:

	char m_car_number [40];
	Fulle_type m_Fulle_type; //enum type
	double m_Amount_of_Fuel_the_person_fill;
	Service_type m_Service_type; //enum type

public:
	Person_using_the_Gas_station( char *name , Fulle_type full_type , int litters_fill , Service_type serv_type ); //constructor
};


any help will be great... I'm really stuck
coder777 (8450)
Where's the problem? Look:

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class Person_using_the_Gas_station
{
private:

    char m_car_number [40];
    Fulle_type m_Fulle_type; //enum type
    double m_Amount_of_Fuel_the_person_fill;
    Service_type m_Service_type; //enum type

public:
    Person_using_the_Gas_station( char *name , Fulle_type full_type , int litters_fill , Service_type serv_type ); //constructor
};

class Gas_station
{
private:

    char m_station_name [40];
    double m_Full_price95;
    double m_Self_price95;
    double m_Full_price98;
    double m_Self_price98;
    std::list<Person_using_the_Gas_station> m_PersonList;
    

public:
    Gas_station(char *name,int full_price,int self_price ); //constructor
    Gas_station();//default constructor
    void set_m_station_name(char* station_name); //set the name of the station from txt file to obj
    void set_m_Full_price(double priceF95);//set the price for full price 95
    void set_m_Self_price(double priceS95);//set the price for self price 95
    void set_mFull_price(double priceF98);//set the price for full price 98
    void set_mSelf_price(double priceS98);//set the price for self price 98
    FULER_INFO FULER_info;//conection to save the fulers
    void PrintStation() const ;
};


This 
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        Gas_station Station1;
        lst.push_front(Station1);
is more a problem since you can't use Station1 the way you do. Just like this: 
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        lst.push_front(Gas_station()); // add a gas station to the list
        Gas_station &Station1 = lst.front(); // NOTE the '&'
Adidas (59)
so what I need 2 change is
1.
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class Gas_station
{
private:

    char m_station_name [40];
    double m_Full_price95;
    double m_Self_price95;
    double m_Full_price98;
    double m_Self_price98;
    std::list<Person_using_the_Gas_station> m_PersonList; // <<========this


2. and insted 
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Gas_station Station1;
        lst.push_front(Station1);


do
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        lst.push_front(Gas_station()); // add a gas station to the list
        Gas_station &Station1 = lst.front(); // NOTE the '&'


is it what your advice?
coder777 (8450)
is it what your advice?
well, yes
Adidas (59)
so it's like this???

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 #include <iostream>
#include <ostream>
#include <istream>
#include "GasStation.h"
#include <fstream>
#include <string>
#include <sstream>
#include <list>
using namespace std;

int main (int argc, char* argv[] )
{
	/*cout<<argc<<endl;*/

	list<Gas_station> lst; // Creates list // Creates list of argc-2 copies of Gas_station() the -2 is because first file is the exe file secound is the simulation and after comes the Stations informaitions. 
	for( int counter=0,counter_arg_v=1 ; counter< argc-1; counter++,counter_arg_v++ )
	{
		lst.push_front(Gas_station()); // add a gas station to the list
        Gas_station &Station1 = lst.front(); // NOTE the '&' 

	/*	Gas_station Station1;
		lst.push_front(Station1);*/

		//list<T> lst(n, e); // Creates list of n copies of e. 

		char nameafter[40];

		string str98 ("Octan98");
		string str95 ("Octan95");
		string line  ;
		ifstream myfile (argv[counter_arg_v]); // open the txt file
		if (myfile.is_open())
		{
			while ( myfile.good() )//scan each row and do the right commands untill the end of the file
			{
				getline (myfile,line);
				if (line[0]!='#')
				{
					if(line[0]=='S') // to get the station name
					{
						std::string y;
						const std::string::size_type pos = line.find(":"); // after :
						if(pos != std::string::npos)
							y = line.substr(pos + 1);
						strcpy(nameafter,y.c_str());
						std::cout<<nameafter<<endl<<endl; // the name of the station got from file
						Station1.set_m_station_name(nameafter);//copy the name of the station from the txt file into the object		
					}

					else if(line[0]=='O')  //    Octan cheak ang get values of price
					{
						std::string part2;
						std::stringstream ss2(line);
						std::getline(ss2, part2, ',');
						if(part2.compare(str98)==0)
						{
							std::cout<<"Using "<<str98<<endl;
							getline(ss2,part2, ',');
							std::cout<<"Full service"<< part2<<endl;
							Station1.set_mFull_price(atof(part2.c_str())); //convert the string from string to int and assing

							getline(ss2,part2, ',');
							std::cout<<"Self service "<<part2<<endl<<endl;
							Station1.set_mSelf_price(atof(part2.c_str()));//convert the string from string to int and assing

						}
						else if(part2.compare(str95)==0)
						{
							std::cout<<"Using "<<str95<<endl;
							getline(ss2,part2, ',');
							std::cout<<"Full service"<< part2<<endl;
							Station1.set_m_Full_price(atof(part2.c_str()));//convert the string from string to int and assing

							getline(ss2,part2, ',');
							std::cout<<"Self service "<<part2<<endl<<endl;
							Station1.set_m_Self_price(atof(part2.c_str()));//convert the string from string to int and assing
						}
						else
						{
							std::cout<<"You enter a wrong fild of Fule , pleas try again"<<endl;
							exit(1);
						}
					}
					else //fullers list
					{
						list<FULER_INFO> lst2; //list of fulers in the station

						lst2.push_front(Station1.FULER_info);

						std::string part2;
						std::stringstream ss2(line);


						std::getline(ss2, part2, ',');
						std::cout<<"The car number is "<< part2<<endl;
						strcpy(Station1.FULER_info.car_id,part2.c_str());// copy the car id to fild

						std::getline(ss2, part2, ','); //copy the fuling kind 95/98
						std::cout<<"The fuling kind is "<< part2<<endl;
						if(part2[0]=='9')
						{
							if(part2[1]=='5')
								Station1.FULER_info.Octan_type=octan95;
						}
						else  if(part2[0]=='9')
						{
							if ((part2[1])=='8')
								Station1.FULER_info.Octan_type=octan98;
						}
						else
						{
							cerr<<"You enterd wrong value of fuel"<<endl;
							exit(1);
						}

						std::getline(ss2, part2, ','); // copy the number of liters feuled
						std::cout<<"The number of liters is "<< part2<<endl;
						Station1.FULER_info.num_of_liteRs=atof(part2.c_str());

						std::getline(ss2, part2, ',');
						std::cout<<"The fuling type is "<< part2<<endl<<endl;
						if(part2[0]=='F') //means full service is used
							Station1.FULER_info.SERVICE_TYPE_=FullService;
						else if (part2[0]=='S')//means self service is used
							Station1.FULER_info.SERVICE_TYPE_=SelfService;
						else
						{
							cout<<"You enter wrong service type"<<endl;
							exit(1);
						}

					} //else //fullers list
				}  //if (line[0]!='#')
			}//while ( myfile.good() )

		} //if (myfile.is_open())
		else std::cout << "Unable to open file"<<endl; 

		myfile.close();

		std::cout<<lst.size()<<endl;


	}//for(...)
	return 0;
}//main()


header
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 #ifndef GasStation_H
#define GasStation_H
#include <iostream>
#include <list>
#include <stdlib.h>
#include <string.h>

typedef enum fulle_type {octan95,octan98} Fulle_type;
typedef enum  service_type{FullService,SelfService} Service_type ;

class FULER_INFO{ // class to chain the fulers used the station
public:
	char car_id [20];
	Fulle_type Octan_type;
	double num_of_liteRs;
	Service_type SERVICE_TYPE_;
	FULER_INFO* NEXT;
	FULER_INFO() {}; //default constructor
};

class Gas_station
{
private:

	char m_station_name [40];
	double m_Full_price95;
	double m_Self_price95;
	double m_Full_price98;
	double m_Self_price98;
	

public:
	Gas_station(char *name,int full_price,int self_price ); //constructor
	Gas_station();//default constructor
	void set_m_station_name(char* station_name); //set the name of the station from txt file to obj
	void set_m_Full_price(double priceF95);//set the price for full price 95
	void set_m_Self_price(double priceS95);//set the price for self price 95
	void set_mFull_price(double priceF98);//set the price for full price 98
	void set_mSelf_price(double priceS98);//set the price for self price 98
	FULER_INFO FULER_info;//conection to save the fulers
	std::list<FULER_INFO> m_PersonList;
	 
	void PrintStation() const ;
};

is it will save also the stations and also the list of persons that used the station ?
coder777 (8450)
um, where's the good old 'Person_using_the_Gas_station' gone?

you don't need the lines 86 and 88 anymore.

Generally: initialize your member variables in your constructor.

I'd recommend a more object orientd approach: Introduce a function for each class that gets the stream and picks the data it needs (and maybe later write it back)
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