Invilad types 'double[int]' for array subscript

[SD14]

So i am trying to make a program that will take in employee info and then display it out but i am stuck at this error

Employee.cc: In member function ‘void HourlyWorker::setPay(double, double)’:
Employee.cc:45: error: invalid types ‘double[int]’ for array subscript

here are my files

Employee.h

#include <iostream>
#include <stdio.h>
#include <string.h>
#include <iomanip>
#include <unistd.h>
#include <stdlib.h>
using namespace std; 

class Employee // Base class
{
    public:
        Employee(const string, const string, const int);
        virtual void print() const = 0;
        virtual float earnings() const = 0;
        ~Employee();
        int pos;
    private:
        string firstName;
        string lastName;
};

class HourlyWorker:public Employee
{
    public:
        HourlyWorker(const string, const string, const int);
        void print() const;
        void setPay(double, double);
        float earnings() const;
    private:
        double hourlyRate[10];
        double hours[10];
};

class Manager:public Employee
{
    public:
        Manager(const string, const string, const int);
        void print() const;
        void setPay(double);
        float earnings() const;
    private:
        double monthlyPay[10];
};

class OnCommission:public Employee
{
    public:
        OnCommission(const string, const string, const int);
        void print() const;
        void setPay(int, double);
        float earnings() const;
    private:
        float salary[10];
        double commission[10];
        int quantity[10];
};

Employee.cc

#include "Employee.h"

Employee::Employee(string first, string last, int pos2)
{
    firstName = first;
    lastName = last;
    pos = pos2;    
}

Employee::~Employee()
{
    //will do something dont know what yet though.
}

HourlyWorker::HourlyWorker(string first, string last, int pos2) : Employee(first, last, pos2)
{
}

Manager::Manager(string first, string last, int pos2) : Employee(first, last, pos2)
{
}

OnCommission::OnCommission(string first, string last, int pos2) : Employee(first, last, pos2)
{
}
void Employee::print() const
{
    cout << firstName << " " << lastName << endl;
}

float Employee::earnings() const
{
    
}

void HourlyWorker::print() const
{
    Employee::print();
    cout << " " << " earns " << earnings() << endl;
}

void HourlyWorker::setPay(double hours, double rate)
{
    hourlyRate[pos] = rate;
    hours[pos] = hours;
}

float HourlyWorker::earnings() const
{
    return hourlyRate[pos]*hours[pos];
}

void Manager::print() const
{
    Employee::print();
    cout << " earns " << earnings() << endl;
}

void Manager::setPay(double money)
{
    monthlyPay[pos] = money;
}

float Manager::earnings() const
{
    return monthlyPay[pos];
}

void OnCommission::print() const
{
    Employee::print();
    cout << " has wages " << earnings() << endl;
}

void OnCommission::setPay(int items, double rate)
{
    commission[pos] = rate;
    quantity[pos] = items;
}

float OnCommission::earnings() const
{
    return salary[pos] + commission[pos]*quantity[pos];
}

Employee_driver.cc

#include "Employee.h"

int read_int();
double read_double();

int main() 
{
    int pos = 0;
    int temp;
    int answer = 0;
    string firstname[10];
    string lastname[10];
    int classification[10];
    int itemsMade = 0;
    double managerSalary = 0;
    double hourlyRate = 0;
    double hoursWorked = 0;
    double itemRate = 0;
    bool ex = false;
    
    Employee *arrayOfEmp[10];
    
    while (ex != true)
    {
        cout << "1. Add new Employee" << endl;
        cout << "2. List all Employees" << endl;
        cout << "3. Exit" << endl;
        answer = read_int();        
        
        if (answer == 1)
        {

            cout << "What is the classification of this worker? " << endl;
            cout << "1. Manager" << endl;
            cout << "2. Hourly Worker" << endl;
            cout << "3. Contract Worker" << endl;
            classification[pos] = read_int();

            if (classification[pos] == 1)
            {
                cout << "What is the first name of the employee:"; 
                cin >> firstname[pos];

                cout << "What is the last name of the employee:";
                cin >> lastname[pos];

                cout << "How much is the Salary that this Manager gets:";
                managerSalary = read_double();
                
                Manager m(firstname[pos], lastname[pos], pos);
                
                m.Manager::setPay(managerSalary);
        
                arrayOfEmp[pos] = &m;
                
            }
            else if (classification[pos] == 2)
            {
                cout << "What is the first name of the employee:"; 
                cin >> firstname[pos];

                cout << "What is the last name of the employee:";
                cin >> lastname[pos];

                cout << "What is this workers hourly pay:";
                hourlyRate = read_double();
                
                cout << "How many hours did this worker work:";
                hoursWorked = read_double();
                
                HourlyWorker h(firstname[pos], lastname[pos], pos);
                
                h.HourlyWorker::setPay(hourlyRate, hoursWorked);
        
                arrayOfEmp[pos] = &h;
            }
            else if (classification[pos] == 3)
            {
                cout << "What is the first name of the employee:"; 
                cin >> firstname[pos];
    
                cout << "What is the last name of the employee:";
                cin >> lastname[pos];                
                
                cout << "How many items did this Contracter produce:";
                itemsMade = read_int();

                cout << "What is this Contractors price per item:";
                itemRate = read_double();
                
                OnCommission o(firstname[pos], lastname[pos], pos);
                
                o.OnCommission::setPay(itemsMade, itemRate);
        
                arrayOfEmp[pos] = &o;
        
            }
            pos++;
        }//end big if 
        
        else if (answer == 2)
        {
    
            int tempPos = 0;
                
            for (int i = 0;i < tempPos; i++)
            {
                arrayOfEmp[i] -> print();
            }
    
        } 
        
        else if (answer == 3)
        {
            ex = true;
            exit(1);
        }    
    }//end loop
}

int read_int()
{ 
//Preconditions: none
//Postconditions: the users input was a valid integer
    int val; //integer that will be used to check and see if the users input is valid
    cin >> val;
    while( !cin.good () ){ //while loop that if the value is not valid will ask them to input a valid answer
        cin.clear();
        cin.ignore(256, '\n');
        cout <<"invalid number" << endl;
        cin >> val;
        }
return val;
}
double read_double()
{ 
//Preconditions: none
//Postconditions: the users input was a valid integer
    double val; //integer that will be used to check and see if the users input is valid
    cin >> val;
    while( !cin.good () ){ //while loop that if the value is not valid will ask them to input a valid answer
        cin.clear();
        cin.ignore(256, '\n');
        cout <<"invalid number" << endl;
        cin >> val;
        }
return val;
}

any help or insight on this error would be great

-thanks

[Null]

You are trying to assign hours to hours[pos] because a function parameter shadows a class variable
This should fix the problem:

void HourlyWorker::setPay(double hours, double rate)
{
    hourlyRate[pos] = rate;
    this->hours[pos] = hours; // this->hours is the member of HourlyWorker while hours is a parameter of the function
}