// Program Name:   Friend_5LaX2a.exe
// Author:         Tyler Travis, Eruption Software
//                 www.travis-usa.com
// Date:           2/19/00



//This program creates two Classes and uses a  Friend Function, 
//and displays both Class's data.


#include<iostream.h>
#include<string.h>

#define NAME_TOTAL 25

class Cities;  // a forward reference

class Customers
{
      private:
            int cust_num;
	        int zip_code;
	        char name[NAME_TOTAL];
      public:
            Customers();  //constructor
            void get_Cust_info(); //prototype to assign values
			void show_cust_info();
	        friend void friend_display(Customers Cust, Cities City);
            static char exit();
};

class Cities
{
        private:
	        char city_name[NAME_TOTAL];
	        char state[NAME_TOTAL];
	        int zip;
        public:
            Cities();  //constructor
            void get_city_info(void);
			void show_city_info(void);
	        friend void friend_display(Customers Cust, Cities City);
};

void main()
{
	 char answer;
     int Custs = 1, x = 0, Addrs = 1;

	 cout<<""<<endl;
	 cout<<" DPR226 Tutorial 5, Lesson A Exercise 2a"<<endl;
	 cout<<" By Tyler Travis"<<endl;

     do
	 {
       x = 0;

      cout<<endl<<endl <<" How many Customers are there?: ";
       cin>>Custs;
       cin.get();

      Customers *ptr2Custclass = new Customers[Custs];
      Customers *CustTmp = ptr2Custclass;

      ptr2Custclass->show_cust_info();

        for(x = 0; x < Custs; ++x)
		{  ptr2Custclass->get_Cust_info(); //keyboard input
           ptr2Custclass++;   
		}

      cout<<" How many Addresses are there?: ";
       cin>>Addrs;
       cin.get();

      Cities *ptr2Cityclass = new Cities[Addrs];
      Cities *AddrTmp = ptr2Cityclass;

      ptr2Cityclass->show_city_info();

        for(x = 0; x < Addrs; ++x)
		{   ptr2Cityclass->get_city_info(); //keyboard input
            ptr2Cityclass++;   
		}

        ptr2Custclass = CustTmp;
		ptr2Cityclass = AddrTmp;

        for(x = 0; x < Custs; ++x)
        {   ptr2Custclass->show_cust_info(); // shows the input info
            ptr2Custclass++;    }
        for(x = 0; x < Addrs; ++x)
         {  ptr2Cityclass->show_city_info(); //keyboard input
            ptr2Cityclass++;   }

        ptr2Custclass = CustTmp;
		ptr2Cityclass = AddrTmp;

        for(int i = 0; i < Custs; ++i)
		{
	        for(int x = 0; x < Addrs; ++x)
			{
                friend_display(*ptr2Custclass, *ptr2Cityclass);
                ptr2Cityclass++;
			}
		    ptr2Cityclass = AddrTmp;
            ptr2Custclass++;
		}

        delete []CustTmp;
        delete []AddrTmp;

        answer = Customers::exit();
	 }
     while (answer == 'y' || answer == 'Y');
}

Customers::Customers(void)    //constructor
{
	cout<<endl<<" Customers Class Constructor Values:"<<endl;
	strcpy(name,"Barney Fife");
    cust_num = 55;
	zip_code = 19082;
}
Cities::Cities(void)   //constructor
{
	cout<<endl<<" Cities Class Constructor Values:"<<endl;
	strcpy(city_name,"Upper Darby");
	strcpy(state,"PA");
	zip = 19082;
}

void friend_display(Customers Cust, Cities City)   //Friend Function
{
 	if(Cust.zip_code == City.zip)
	{  cout<<" Here is a matching record for ";
	   cout<<Cust.name<<":"<<endl; 
	   cout<<" "<<City.city_name<<", "<<City.state<<" ";
	   cout<<City.zip<<endl;
	}
}

void Customers::show_cust_info(void)  //prototype to input values from keyboard
{
     cout<<" Customer: "<<name;
     cout<<", Account Number: "<<cust_num;
     cout<<", Zip Code: "<<zip_code<<endl<<endl;
}

void Customers::get_Cust_info(void)  //prototype to input values from keyboard
{
     cout<<" Enter the Customer's Name: ";
      cin.getline(name,NAME_TOTAL );
     cout<<" Enter the Customer's Account Number: ";
      cin>>cust_num;
     cout<<" Enter the Customer's Zip Code: ";
      cin>>zip_code;
      cin.get();

     cout<<endl;
}

void Cities::show_city_info(void)
{
	 cout<<" City: "<<city_name;
     cout<<", State: "<<state;
     cout<<", Zip Code: "<<zip<<endl<<endl;
}

void Cities::get_city_info(void)
{
     cout<<" Enter the City's Name: ";
      cin.getline(city_name,NAME_TOTAL );
     cout<<" Enter the State: ";
      cin>>state;
     cout<<" Enter the City's Zip Code: ";
      cin>>zip;
      cin.get();

     cout<<endl;
}

char Customers::exit()
{
    char ans;
    cout<<""<<endl;
    cout<<" Again? (y/n): ";
     cin>>ans;
     cin.get();

    return(ans);
}