c++ - derived class giving error when accessing private variables of base class -

i making c++ program store employee's data name, id, saleamount, commission amount , calculate earning (sales*commission). using concept of inheritance. base class 'employee' , derived class 'senioremployee'. when run program, compiler gives me error cannot access private members of base class. errors

error: 'std::__cxx11::string employee::name' private.

another error on 2nd line

error: 'int employee::id' private

again same error on 3rd line

error: 'double employee::sales' private

following code. have included files.

file employee.h

#ifndef employee_h_ #define employee_h_  #include <iostream> #include <string>  using namespace std;   class employee {  public:      employee(string empname, int empid, double empsales, double empcomm);      void setname(string empname);     string getname();      void setid(int empid);     int getid();      void setsales(double empsales);     double getsales();      void setcomm(double empcomm);     double getcomm();      double earning();   private:       string name;      int id;      double sales;      double commission;  };   #endif 

file employee.cpp

#include <iostream> #include <string> #include "employee.h"  using namespace std;  employee::employee(string empname, int empid, double empsales, double empcomm): name(empname), id(empid), sales(empsales), commission(empcomm) {  }  void employee::setname(string empname) {     name=empname; }  string employee::getname() {      return name; }  void employee::setid(int empid) {     id=empid; }  int employee::getid() {     return id; }  void employee::setsales(double empsales) {     sales=empsales; }  double employee::getsales() {     return sales; }  void employee::setcomm(double empcomm) {     commission=empcomm; }  double employee::getcomm() {     return commission; }  double employee::earning() {     return sales*commission; } 

file senioremployee.h

#ifndef senioremployee_h_ #define senioremployee_h_ #include "employee.h"  #include <iostream> #include <string>   using namespace std;  class senioremployee: public employee {  public:       senioremployee(string empname, int empid, double empsales, double empcomm, double basesalary);       void setbasesalary(double basesalary);       double getbasesalary();  private:     double bsalary; };   #endif 

file senioremployee.cpp

#include <iostream> #include <string> #include "senioremployee.h"  using namespace std;  senioremployee::senioremployee(string empname, int empid, double empsales, double empcomm, double basesalary) : employee(name,id,sales,commission) { }  void senioremployee::setbasesalary(double basesalary) {     bsalary=basesalary; }  double senioremployee::getbasesalary() {     return bsalary; } 

file main.cpp

#include <iostream> #include "senioremployee.h"  using namespace std;  int main() {      string empname = "fareed shuja";     int empid = 3978;     double empsales = 30.0;     double empcomm = 0.99;     double basesalary = 50.0;      senioremployee emp(empname,empid,empsales,empcomm,basesalary);      cout << "name of employee : " << emp.getname() << endl;      cout << "employee id : " << emp.getid() << endl;      cout << "sale amount : " << emp.getsales() << endl;      cout << "commission : " << emp.getcomm() << endl;      cout << "earning : " << emp.earning() << endl;      cout << "employee's base salary " << emp.getbasesalary() << endl;       return 0; } 

the following line in senioremployee.cpp incorrect:

senioremployee::senioremployee(string empname, int empid, double empsales, double empcomm, double basesalary) : employee(name,id,sales,commission) 

it's attempting access private variables 'name', 'id', etc... instead of passing constructor's arguments base class constructor. should instead be:

senioremployee::senioremployee(string empname, int empid, double empsales, double empcomm, double basesalary) : employee(empname,empid,empsales,empcomm) 

also if want access variables derived class not make them visible outside of class must declared protected instead of private.