Old Version

#include <iostream>
#include <iomanip>

using namespace std;

double operate (double yearlySalary)
    {
        return yearlySalary/52;
    }

void salaried() //Salaried Employees
{
    double yearlySalary;
    cout << "Please enter your yearly salary." << endl;
    cin >> yearlySalary;
    double weeklySalary = operate(yearlySalary);
    float grossPayOne;
    float grossPayTwo;
    cout << "Your weekly stipend is: $" << weeklySalary << endl;  // Gives weekly stipend
    if (weeklySalary > 3000)
        {
            double taxRate = 0.075;
            cout << "The tax rate for your weekly paycheck is 0.075%." << endl;
            grossPayOne = weeklySalary - (weeklySalary * taxRate);
            cout << "Your Take Home Stipend is: $" << grossPayOne << endl; // Take Home Stipend
        }
    else if (weeklySalary < 3000)
        {
            double userTaxRate;
            cout << "Please enter your tax rate." << endl;
            cin >> userTaxRate;
            grossPayTwo = weeklySalary - (weeklySalary * userTaxRate);
            cout << "Your Take Home Stipend is: $" << grossPayTwo << endl; // Take Home Stipend
        }
}

double operatorTwo (double a, double b)
    {
        return (a * b);
    }

double operatorThree (double a, double b)
    {
        return (a * 40 + 1.5 * a * (b - 40));
    }

void hourly() //Hourly Employees
{
    int taxChoice = 0;
    double hourlyRate;
    double numOfHours;
    cout << "Please enter your hourly rate." << endl; //Prompts user to input their pay rate
    cin >> hourlyRate;
    cout << "Please enter your number of hours." << endl; //Prompts user to input amount of hours in a week
    cin >> numOfHours;
    if (numOfHours < 40)
    {
        float HomePayOne;
        double hourWeekSalaryOne = operatorTwo(hourlyRate, numOfHours);
        cout << "Your weekly stipend is: $" << hourWeekSalaryOne << endl;  // Gives weekly stipend
        cout << "Would you like to use the standard 0.075% tax rate or your own? (Enter 0 for standard or 1 for your own)" << endl; //Prompts user to choose between standard tax rate or their user-inputted tax rate.
        cin >> taxChoice;
        if (taxChoice == 0)
        {
            HomePayOne = hourWeekSalaryOne - (hourWeekSalaryOne * 0.075);
            cout << "Your Take Home Stipend is: $" << HomePayOne << endl; // Take Home Stipend
        }
        else if (taxChoice == 1)
        {
            double UserTaxRateOne;
            cout << "Please enter your tax rate." << endl;
            cin >> UserTaxRateOne;
            HomePayOne = hourWeekSalaryOne - (hourWeekSalaryOne * UserTaxRateOne);
            cout << "Your Take Home Stipend is: $" << HomePayOne << endl; // Take Home Stipend
        }
    }
    else if (numOfHours > 40)
    {
        double UserTaxRateTwo;
        float HomePayTwo;
        double hourWeekSalaryTwo = operatorThree(hourlyRate, numOfHours);
        cout << "Your weekly stipend is: $" << hourWeekSalaryTwo << endl;  // Gives weekly stipend
        cout << "Would you like to use the standard 0.075% tax rate or your own? (Enter 0 for standard or 1 for your own)" << endl;  //Prompts user to choose between standard tax rate or their user-inputted tax rate.
        cin >> taxChoice;
        if (taxChoice == 0)
        {
            HomePayTwo = hourWeekSalaryTwo - (hourWeekSalaryTwo * 0.075);
            cout << "Your Take Home Stipend is: $" << HomePayTwo << endl; // Take Home Stipend
        }
        else if (taxChoice == 1)
        {
            cout << "Please enter your tax rate." << endl;
            cin >> UserTaxRateTwo;
            HomePayTwo = hourWeekSalaryTwo - (hourWeekSalaryTwo * UserTaxRateTwo);
            cout << "Your Take Home Stipend is: $" << HomePayTwo << endl; // Take Home Stipend
        }
    }
}

double operatorFour (double a, double b){
        return (a / b);
}

void contracted() //Contracted Employees
{
    double contractAmount;
    cout << "Please enter amount stated in your contract." << endl; //Prompts user to input amount from contract
    cin >> contractAmount;
    double numOfWeeks = 52;
    double contractSalary = operatorFour(contractAmount, numOfWeeks);
    cout << "Your weekly stipend is: $" << contractSalary << endl; // Gives weekly stipend
    if (contractSalary >= 3000)
        {
            double TaxRate = 0.075;
            float TakeHomePayOne;
            TakeHomePayOne = contractSalary - (contractSalary * TaxRate);
            cout << "Your Take Home Stipend is: $" << TakeHomePayOne << endl; // Take Home Stipend
        }
    else if (contractSalary < 3000)
        {
            double InputTaxRate;
            float TakeHomePayTwo;
            cout << "Please enter your tax rate." << endl;
            cin >> InputTaxRate;
            TakeHomePayTwo = contractSalary - (contractSalary * InputTaxRate);
            cout << "Your Take Home Stipend is: $" << TakeHomePayTwo << endl; // Take Home Stipend
        }
}

int main()
{
    cout << fixed << setprecision(2);
    char employee = ' ';
    do{
        cout << "Welcome to Whirlpool Industries Employee Stipend Calculation System." << endl; // Start of program, welcomes user.
        cout << "This program will produce a calculation of your weekly net pay." << endl; //Explains what program will do.
        cout << "Whirlpool Inc. Employees are categorized into the following categories: Salaried, Hourly, and Contracted." << endl; //Explains how employees are categorized.
        cout << "Please enter what type of employee you are. (Use S, H, or C)[Enter 0 to quit.]" << endl; //Prompts user to pick a category or to quit.
        cin >> employee;
        if(employee == '0')
            {
                return 0;
        }
        if(employee != 'S' && employee != 'H' && employee != 'C') cout << "Invalid input, please try again." << endl; //Shows that user input incorrect information
        if (employee == 'S')
            {
                salaried();
        }
        if (employee == 'H')
            {
                hourly();
        }
        if (employee == 'C')
            {
                contracted();
        }
    }while(employee == 'S' || employee == 'H' || employee == 'C');
    return 0;
}