Problem With Virtual Methods

Ok am in the header file I am going to post below, I i get the following errors

error C2061: syntax error : identifier 'fstream'

I get those two errors for the two methods, I searched for the error but what i found didn't help, so am here once again.

Code:

#ifndef INSURANCE_H
#define INSURANCE_H
#include "Date.h"
using std::string;
#include<string>
#include<fstream>

//Parent Class || Abstract Class
class Policy{

private:
	
	
	
	string policy_type;//Policy Type

protected:
	int pol_num;//policy number
	string pol_hol;//policy holder
	Date eff_date;//effective date of policy
	Date exp_date;//expiry date of policy

public:
	Policy();//default constructor, used to instantiate the object
	Policy(Date&, Date&,  string);//Primary Constructor For Policy
	~Policy();//Destructor
		
	//Accessors
		int getPolNum();
		string getPolHol();
		Date getEffDate();
		Date getExpDate();
		
		
		
			//Mutators
			void setPolNum(int);
			void setPolHol(string);
			void setEffDate(int, int, int);
		
			void setExpDate(int, int, int);
		
			
			
			//Calculation Method
			virtual float Premium (float)= 0;//This is the polimorphic function declaration 
			virtual void Add (fstream)=0;	
			//virtual void Delete(void)= 0;

			//virtual void Edit(void)= 0;

			
			virtual void View(fstream)= 0;
};//Closes The Class

#endif

you should not add using directive to the header.
instead - use fully qualified names like

std::string

or

std::fstream

It's std::fstream (like std::string, which you should type like that in a header file) and it cannot be passed by value.

Thanks guys but the am std::fstream alone doesn't work but when i add the using before it, it works perfectly same for the std::string; and i set the parameter as pass by reference, thanx alot...

Originally Posted by frassunit

Thanks guys but the am std::fstream alone doesn't work but when i add the using before it, it works perfectly same for the std::string; and i set the parameter as pass by reference, thanx alot...

as i said - you should not add using into header.

so better remove it and search for any occurense of fstream type in your header. Then replace it with std::fstream

Ok, thanx for tha previous help but i have a problem with viewing something after i save it to a file, i cant seem to get the syntax for it. Say I have the function for adding data to a file like the one am gonna post below how would i access that file from a different function to view specific records.

Code:

void HomeIns::  Add(ofstream &PolicyFile)
	 	 
 {
		//ofstream PolicyFile;
	 PolicyFile.open("Policy.txt",ios::out | ios::app| ios::binary );
		HomeIns  *nHome;
		Date XDate, EDate;
		int day, month, year;
		int xday, xmonth, xyear;
		float home_val;
		string fladdr;
		string sladdr;
		string Roof_Type;
		int hnum;

		string person;
		float premium_cost;
		


		cout<<"Enter The Name Of The Policy Holder: ";
		cin>>person;
		cout<<"\n\nPlease Enter The Value Of The House: ";
		cin>>home_val;
		cout<<"\n\nPlease Enter The First Line Of Address For The House: ";
		cin>>fladdr;
		cout<<"\n\nPlease Enter The Second Line Of Address For The House: ";
		cin>>sladdr;
		cout<<"\n\nPlease Enter The Roof Type of The House: ";
		cin>>Roof_Type;
		cout<<"\n\nEnter The Day The Policy begins: ";
		cin>>day;
		cout<<"\n\nEnter The Month The Policy begins: ";
		cin>>month;
		cout<<"\n\nEnter The Day The Year begins: ";
		cin>>year;
		cout<<"\n\nEnter The Day The Policy finishes: ";
		cin>>xday;
		cout<<"\n\nEnter The Month The Policy finishes: ";
		cin>>xmonth;
		cout<<"\n\nEnter The Year The Policy finishes: ";
		cin>>xyear;		
		system("CLS");
		
		Home home(home_val, fladdr, sladdr, Roof_Type);
		
		setEffDate(day, month, year);
		
		setExpDate(xday, xmonth, xyear);
		
		EDate=getEffDate();
		
		XDate= getExpDate();

		hnum=policynumber();
		

		premium_cost= Premium(home_val);
		
			
		nHome= new HomeIns(home, premium_cost,EDate, XDate, person, hnum );

		if
			(!PolicyFile){
		cout<<"Error Creating FIle!!!\nSORRY!!!";
		return;
	}
	PolicyFile<<"\n";
	PolicyFile.write(reinterpret_cast<char*>(&nHome),sizeof(HomeIns));
	PolicyFile<<"\n";
	PolicyFile.close();

	
		//nHome= new HomeIns[sizeof(HomeIns)];
		//nHome= &HomeIns(home, premium_cost,EDate, XDate, person );
		
		
	}

the coding above works like a charm. this is what i have for the viewing function say for instance i would like to view the third record what would the syntax be?

Code:

void HomeIns:: View(ifstream &Policyfile){
	 HomeIns *vHome;
	 int number;
	 
		  Policyfile.open("Policy.txt", ios::in | ios::binary);
		
	 	if(!Policyfile){
		
			cout<<"Error Creating File!!!\nSORRY!!!";
		return;
			}
		cout<<"Enter The Policy Number Of For The Home You Would Like To View: ";
		cin>>number;
		vHome->pnum=number;
		while(!Policyfile.eof() && vHome->pnum>0){
			Policyfile.seekg( (vHome->pnum-1)* sizeof(HomeIns));
			Policyfile.read(reinterpret_cast<char *>(&vHome), sizeof(HomeIns));
			if(vHome->pnum!=0){
				cout<<vHome->home.getFAddress();
			}
			else {
				cout<<"Enter Another Record Number";
				cin>>vHome->pnum;
			}
		}
			Policyfile.close();

 }

what i get after running the program and i try to view i get an exception handling error or something like that.
I KNow programming can be a dick sometimes.

In your view function vHome is not initialized pointer - you cannot write there

I don't want to write in the view i just want to get whats stored in the file at the given seek position. I dont know the syntax for it that's why i asked...