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:

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#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

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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...

Quote:

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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...

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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:

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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:

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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();

 }

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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...