Problem with function

archer86 (15)
I cannot get the function highlownetpay to work. Tried many variations with same results. Output produces initialized values 1000000 and 0 for minnp and maxnp variables. I don't believe netpay is being passed to the function from the main. Any insight would be greatly appreciated. Thanks in advance.

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#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

class payroll {
ifstream fin;
public: string employeename; 
        char maritalstatus, paystat;
        int employeeid, i;
        float taxrate;
        double hoursworked, overtimehours, regularhours;
        double hourlyrate, regularpay, minnp, maxnp;
        double avgnetpay, taxamount, netpay, grosspay, overtimepay;
        virtual double findgrosspay();
        void setvariables(char[], int, char, char, double, double, int);
        void findtaxamount();
        double findnetpay();
        void printheaders();
        void printdata();
        double highlownetpay(double, double, double);
        payroll();
        ~payroll();
};

class hourly : public payroll {
public: double findgrosspay() { 
        if (hoursworked > 40 ) {
           overtimehours = hoursworked - 40;
           regularpay = hoursworked * hourlyrate;
           overtimepay = overtimehours * (hourlyrate * 1.5);
           grosspay = regularpay + overtimepay; }
        else {
            grosspay = hoursworked * hourlyrate;
            regularpay = grosspay; }
return grosspay;
};// findgrosspay
};

class salaried : public payroll {
public: double findgrosspay() { 
        regularpay = hourlyrate / 52; //For salaried employees, 
//                            hourlyrate is read in from input as annual salary.
        overtimehours = hoursworked - 40;
        grosspay = regularpay;
        if (overtimehours > 0) {
           overtimepay = overtimehours * (regularpay / 40);
           grosspay = regularpay + overtimepay;
return grosspay;
        }// If
};//findgrosspay
};

payroll::payroll() {
fin.open("payroll16.dat"); }
payroll::~payroll() {
fin.close();  }

void payroll::setvariables(char aemployeename[], int aemployeeid, char amaritalstatus, 
               char apaystat, double ahoursworked, double ahourlyrate, int i) {
     employeename = aemployeename;
     employeeid = aemployeeid;
     maritalstatus = amaritalstatus;
     paystat = apaystat;
     hoursworked = ahoursworked;
     hourlyrate = ahourlyrate;
}// setvariables
   
void payroll::findtaxamount() {
     taxrate = .30;
     taxamount = grosspay * taxrate;
}// findtaxamount

double payroll::findgrosspay() {
     overtimehours = 0;
     regularpay = 0;
     overtimepay = 0;
     grosspay = 0;
     if (hoursworked > 40 ) {
        overtimehours = hoursworked - 40;
        regularpay = hoursworked * hourlyrate;
        overtimepay = overtimehours * (hourlyrate * 1.5);
        grosspay = regularpay + overtimepay; }
     else
        grosspay = hoursworked * hourlyrate;
        regularpay = grosspay;
return grosspay;
}// findgrosspay

double payroll::findnetpay()  {
     netpay = grosspay - taxamount;
return netpay;
}// findnetpay

double payroll::highlownetpay(double netpay, double maxnp, double minnp) {
     if (netpay < minnp) {minnp = netpay;}
     if (netpay > maxnp) {maxnp = netpay;}
return minnp, maxnp;
}// highlownetpay
     
void payroll::printheaders()  {
     cout<<setw(45)<<"-PAYROLL REPORT-"<<endl<<endl;
	 cout<<" NAME      ID   HW   OT    RT-PAY  OT-PAY   GROSS"
		   "    TAX   NETPAY"<<endl;
cout<<"-----------------------------------------------------------------"<<endl; 
}//printheaders

void payroll::printdata()    {
 	 cout<<setw(10)<<left<<employeename<<setw(4)<<employeeid;
     cout<<setprecision(2)<<setiosflags(ios::fixed | ios::showpoint);
 	 cout<<setw(6)<<right<<hoursworked<<setw(5)<<overtimehours<<setw(8)
     <<regularpay<<setw(8)<<overtimepay<<setw(8)<<grosspay<<setw(8)
     <<taxamount<<setw(8)<<netpay<<endl;  
}//printdata

int main() {
    payroll *employee[6], *report;
    char aemployeename[14], amaritalstatus, apaystat;
    int aemployeeid, i=0;
    double ahoursworked, ahourlyrate;
    double minnp=1000000, maxnp=0;
    double avgnetpay, taxamount, netpay, grosspay, overtimepay;
    report->printheaders();
    
    ifstream fin;
    fin.open("payroll16.dat");
        while (fin>>aemployeename>>aemployeeid>>amaritalstatus>>apaystat
                                                  >>ahoursworked>>ahourlyrate) {
           if (apaystat == 's') {
              employee[i] = new salaried();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate, i);
              employee[i]->findgrosspay(); }// If s
           if (apaystat == 'h') {
              employee[i] = new hourly();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate, i);
              employee[i]->findgrosspay(); }// If h
           employee[i]->findtaxamount();
           employee[i]->findnetpay();
           employee[i]->highlownetpay(netpay, maxnp, minnp);
           employee[i]->printdata();
           i++;
     }// While
     cout<<endl<<"Minimum net pay is: $"<<minnp<<endl;
     cout<<"Maximum net pay is: $"<<maxnp<<endl;
     fin.close();
} //main

Last edited on
Zaita (2770)
I would use some debugging cout statements to ensure your variables are being passed as you have requested.
guestgulkan (2942)
Are you trying to return two values from the function by value?????
Last edited on
archer86 (15)
Yes, I'm trying to return maxnp and minnp, it 's the netpay value that's not being passed to the function. maxnp and minnp are being passed.
Faldrax (324)
The problem is that the class payroll has a netpay variable - this is the one which is being used in the method findnetpay(). The netpay declared in main is never initialised.
Change line 140 to
netpay = employee[i]->findnetpay();
It looks like you are doing something similar for findgrosspay (same varaible in class and main) and possibly elsewhere. It will be worth taking a little time to tidy the varaible up, to be sure it is always doign what you expect.
archer86 (15)
I've made several changes and hopefully, straightened out the variable issue. Since C++ won't let me initialize the variables minnp and maxnp in the class payroll declaration, when and where is it proper to initialize them?

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#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

class payroll {
ifstream fin;
public: string employeename; 
        char maritalstatus, paystat;
        int employeeid, i;
        float taxrate;
        double hoursworked, overtimehours, regularhours;
        double hourlyrate, regularpay, minnp, maxnp;
        double avgnetpay, taxamount, netpay, grosspay, overtimepay;
        virtual double findgrosspay();
        void setvariables(char[], int, char, char, double, double);
        void findtaxamount();
        double findnetpay();
        void printheaders();
        void printdata();
        void highlownetpay();
        void printminmax();
        payroll();
        ~payroll();
};

class hourly : public payroll {
public: double findgrosspay() { 
        if (hoursworked > 40 ) {
           overtimehours = hoursworked - 40;
           regularpay = hoursworked * hourlyrate;
           overtimepay = overtimehours * (hourlyrate * 1.5);
           grosspay = regularpay + overtimepay; }
        else {
            grosspay = hoursworked * hourlyrate;
            regularpay = grosspay; }
return grosspay;
};// findgrosspay
};

class salaried : public payroll {
public: double findgrosspay() { 
        regularpay = hourlyrate / 52; //For salaried employees, 
//                            hourlyrate is read in from input as annual salary.
        overtimehours = hoursworked - 40;
        grosspay = regularpay;
        if (overtimehours > 0) {
           overtimepay = overtimehours * (regularpay / 40);
           grosspay = regularpay + overtimepay;
return grosspay;
        }// If
};//findgrosspay
};

payroll::payroll() {
fin.open("payroll16.dat"); }
payroll::~payroll() {
fin.close();  }

void payroll::setvariables(char aemployeename[], int aemployeeid, char amaritalstatus, 
               char apaystat, double ahoursworked, double ahourlyrate) {
     employeename = aemployeename;
     employeeid = aemployeeid;
     maritalstatus = amaritalstatus;
     paystat = apaystat;
     hoursworked = ahoursworked;
     hourlyrate = ahourlyrate;
}// setvariables
   
void payroll::findtaxamount() {
     taxrate = .30;
     taxamount = grosspay * taxrate;
}// findtaxamount

double payroll::findgrosspay() {
     overtimehours = 0;
     regularpay = 0;
     overtimepay = 0;
     grosspay = 0;
     if (hoursworked > 40 ) {
        overtimehours = hoursworked - 40;
        regularpay = hoursworked * hourlyrate;
        overtimepay = overtimehours * (hourlyrate * 1.5);
        grosspay = regularpay + overtimepay; }
     else
        grosspay = hoursworked * hourlyrate;
        regularpay = grosspay;
return grosspay;
}// findgrosspay

double payroll::findnetpay()  {
     netpay = grosspay - taxamount;
return netpay;
}// findnetpay

void payroll::highlownetpay() {
     if (netpay < minnp) {minnp = netpay;}
     if (netpay > maxnp) {maxnp = netpay;}
}// highlownetpay
     
void payroll::printheaders()  {
     cout<<setw(45)<<"-PAYROLL REPORT-"<<endl<<endl;
	 cout<<" NAME      ID   HW   OT    RT-PAY  OT-PAY   GROSS"
		   "    TAX   NETPAY"<<endl;
cout<<"-----------------------------------------------------------------"<<endl; 
}//printheaders

void payroll::printdata()    {
 	 cout<<setw(10)<<left<<employeename<<setw(4)<<employeeid;
     cout<<setprecision(2)<<setiosflags(ios::fixed | ios::showpoint);
 	 cout<<setw(6)<<right<<hoursworked<<setw(5)<<overtimehours<<setw(8)
     <<regularpay<<setw(8)<<overtimepay<<setw(8)<<grosspay<<setw(8)
     <<taxamount<<setw(8)<<netpay<<endl;  
}//printdata

void payroll::printminmax() {
     cout<<endl<<"Minimum net pay is: $"<<minnp<<endl;
     cout<<"Maximum net pay is: $"<<maxnp<<endl;
}// printminmax
     
int main() {
    payroll *employee[6], *report;
    char aemployeename[14], amaritalstatus, apaystat;
    int aemployeeid, i=0;
    double ahoursworked, ahourlyrate;
//    double minnp=1000000, maxnp=0;
    
    report->printheaders();
    
    ifstream fin;
    fin.open("payroll16.dat");

    while (fin>>aemployeename>>aemployeeid>>amaritalstatus>>apaystat
                                                  >>ahoursworked>>ahourlyrate) {
           if (apaystat == 's') {
              employee[i] = new salaried();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate);
              employee[i]->findgrosspay(); }// If s
           if (apaystat == 'h') {
              employee[i] = new hourly();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate);
              employee[i]->findgrosspay(); }// If h
           employee[i]->findtaxamount();
           employee[i]->findnetpay();
           employee[i]->highlownetpay();
           employee[i]->printdata();
           i++;
     }// While
     
     report->printminmax();
     
     fin.close();
} //main
Last edited on
Faldrax (324)
The standard place to initialise such varaibles is in the class constructor.
maan (9)
respected experts,
plz tell me the little code for that i want to get a name from the user and then print it on the screen in revers order thanks.
Zaita (2770)
maan: We have to continiously tell you. Please create your own topic under the "Beginners" forum. Do not reply to other peoples topics with your own questions.
archer86 (15)
I got it to work!! It was all in passing and returning the values of minnp and maxnp to an from the functions, including the print function.

Thanks to all for your help!

Revised code:
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#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

class payroll {
ifstream fin;
public: string employeename; 
        char maritalstatus, paystat;
        int employeeid, i;
        float taxrate;
        double hoursworked, overtimehours, regularhours;
        double hourlyrate, regularpay, minnp, maxnp;
        double avgnetpay, taxamount, netpay, grosspay, overtimepay;
        virtual double findgrosspay();
        void setvariables(char[], int, char, char, double, double);
        void findtaxamount();
        double findnetpay();
        void printheaders();
        void printdata();
        double minnet(double, int);
        double maxnet(double, int);
        void printminmax(double, double);
        payroll();
        ~payroll();
};

class hourly : public payroll {
public: double findgrosspay() { 
        if (hoursworked > 40 ) {
           overtimehours = hoursworked - 40;
           regularpay = hoursworked * hourlyrate;
           overtimepay = overtimehours * (hourlyrate * 1.5);
           grosspay = regularpay + overtimepay; }
        else {
            grosspay = hoursworked * hourlyrate;
            regularpay = grosspay; }
return grosspay;
};// findgrosspay
};

class salaried : public payroll {
public: double findgrosspay() { 
        regularpay = hourlyrate / 52; //For salaried employees, 
//                            hourlyrate is read in from input as annual salary.
        overtimehours = hoursworked - 40;
        grosspay = regularpay;
        if (overtimehours > 0) {
           overtimepay = overtimehours * (regularpay / 40);
           grosspay = regularpay + overtimepay;
return grosspay;
        }// If
};//findgrosspay
};

payroll::payroll() {
fin.open("payroll16.dat"); }
payroll::~payroll() {
fin.close();  }

void payroll::setvariables(char aemployeename[], int aemployeeid, char amaritalstatus, 
               char apaystat, double ahoursworked, double ahourlyrate) {
     employeename = aemployeename;
     employeeid = aemployeeid;
     maritalstatus = amaritalstatus;
     paystat = apaystat;
     hoursworked = ahoursworked;
     hourlyrate = ahourlyrate;
}// setvariables
   
void payroll::findtaxamount() {
     taxrate = .30;
     taxamount = grosspay * taxrate;
}// findtaxamount

double payroll::findgrosspay() {
     overtimehours = 0;
     regularpay = 0;
     overtimepay = 0;
     grosspay = 0;
     if (hoursworked > 40 ) {
        overtimehours = hoursworked - 40;
        regularpay = hoursworked * hourlyrate;
        overtimepay = overtimehours * (hourlyrate * 1.5);
        grosspay = regularpay + overtimepay; }
     else
        grosspay = hoursworked * hourlyrate;
        regularpay = grosspay;
return grosspay;
}// findgrosspay

double payroll::findnetpay()  {
     netpay = grosspay - taxamount;
return netpay;
}// findnetpay

double payroll::minnet(double minnp, int i) {
     if (i == 0) {minnp = 1000000;}
     if (netpay < minnp) {minnp = netpay;}
return minnp;
} //minnet

double payroll::maxnet(double maxnp, int i) {
     if (i == 0) {maxnp = 0;}
     if (netpay > maxnp) {maxnp = netpay;}
return maxnp;
} // maxnet

void payroll::printheaders()  {
     cout<<setw(45)<<"-PAYROLL REPORT-"<<endl<<endl;
	 cout<<" NAME      ID   HW   OT    RT-PAY  OT-PAY   GROSS"
		   "    TAX   NETPAY"<<endl;
cout<<"-----------------------------------------------------------------"<<endl; 
}//printheaders

void payroll::printdata()    {
 	 cout<<setw(10)<<left<<employeename<<setw(4)<<employeeid;
     cout<<setprecision(2)<<setiosflags(ios::fixed | ios::showpoint);
 	 cout<<setw(6)<<right<<hoursworked<<setw(5)<<overtimehours<<setw(8)
     <<regularpay<<setw(8)<<overtimepay<<setw(8)<<grosspay<<setw(8)
     <<taxamount<<setw(8)<<netpay<<endl;  
}//printdata

void payroll::printminmax(double minnp, double maxnp) {
     cout<<endl<<"Minimum net pay is: $"<<minnp<<endl;
     cout<<"Maximum net pay is: $"<<maxnp<<endl;
}// printminmax

int main() {
    payroll *employee[6], *report;
    char aemployeename[14], amaritalstatus, apaystat;
    int aemployeeid, i=0;
    double ahoursworked, ahourlyrate, minnp, maxnp;
    
    report->printheaders();
    
    ifstream fin;
    fin.open("payroll16.dat");

    while (fin>>aemployeename>>aemployeeid>>amaritalstatus>>apaystat
                                                  >>ahoursworked>>ahourlyrate) {
           if (apaystat == 's') {
              employee[i] = new salaried();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate);
              employee[i]->findgrosspay(); }// If s
           if (apaystat == 'h') {
              employee[i] = new hourly();
              employee[i]->setvariables(aemployeename, aemployeeid, amaritalstatus, 
                                        apaystat, ahoursworked, ahourlyrate);
              employee[i]->findgrosspay(); }// If h
           employee[i]->findtaxamount();
           employee[i]->findnetpay();
           minnp = employee[i]->minnet(minnp, i);
           maxnp = employee[i]->maxnet(maxnp, i);
           employee[i]->printdata();
           i++;
     }// While
     
     report->printminmax(minnp, maxnp);
     
     fin.close();
} //main

tyon (1)
I was just wondering are you running this on Microsoft Visual C++ 6?
archer86 (15)
No. Dev-c++.

http://www.bloodshed.com

I have Microsoft Visual C++ Express Edition but I found Dev-c++ to be much easier for a beginner.
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