// Save MAXCOUNT Magazine Subscriptions to Disk Example using Serialization
// Copyright 1998,2001 Brian J. Reithel, Ph.D.

#include <fstream.h>
#include <iostream.h>
#define MAXCOUNT 3

class magazinesub {
    char name[151];
	char address[151];
	char city[151];
	char state[3];
	int  zip;
public:
    void info_in(void);
    char* getname(void);
	char* getaddress(void);
	char* getcity(void);
	char* getstate(void);
	int   getzip(void);
    void  SerializeToDisk(fstream*);
};

char* magazinesub::getname(){
        return(name);
}

char* magazinesub::getaddress(){
        return(address);
}

char* magazinesub::getcity(){
        return(city);
}

char* magazinesub::getstate(){
        return(state);
}

int magazinesub::getzip(){
        return(zip);
}


void magazinesub::info_in(){
        char nl;

        cout << "Enter the customer's name: ";
        cin.get(name,150,'\n');
        cin.get(nl);

        cout << "Enter the customer's address: ";
        cin.get(address,150,'\n');
        cin.get(nl);

        cout << "Enter the customer's city: ";
        cin.get(city,150,'\n');
        cin.get(nl);

        cout << "Enter the customer's state: ";
        cin.get(state,3,'\n');
        cin.get(nl);

        cout << "Enter the customer's zip code: ";
        cin >> zip;
        cin.get(nl);
}


// the purpose of this member function is to output the member variables
// to a disk file that has already been opened elsewhere, whose fstream address
// is passed to this function

void  magazinesub::SerializeToDisk(fstream* outfile){
	*outfile << name    << endl;  // write to the fstream that outfile points to
	*outfile << address << endl;
	*outfile << city    << endl;
	*outfile << state   << endl;
	*outfile << zip     << endl;
}


int main() {

    magazinesub subs[MAXCOUNT];
	int s;

	for(s=0;s<MAXCOUNT;s++) subs[s].info_in();


    fstream outputfile;
    outputfile.open("subs.dat",ios::out);
	
	// for every instance of magazinesub in the array subs, call the
	// SerializeToDisk member function and pass it the address of
	// the fstream instance called outputfile
	for(s=0;s<MAXCOUNT;s++) subs[s].SerializeToDisk(&outputfile);

    outputfile.close();

    return(0);
}