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#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
//function prototypes
double readDoubleBetween(string, double, double);
double calcWage(double, double);
double calcFicaTax (double);
double calcFederalTax (double);
int main ()
{
//constant section
const double FED_MINIMUM_WAGE = 7.25; //minimum federal wage
//variable section
double hours = 0.0; //hours worked during the week.
double hourlyRate = 0.0; //hourly rate of pay
double weeklyWage = 0.0; //weekly wage
double ficaTax = 0.0; //fica tax
double weeklyFederalIncomeTax = 0.0; // Federal Income Tax
//set print options
cout << fixed << showpoint << setprecision(2);
//print heading
cout << "Program to calculate weekly gross pay for hourly employees" << endl;
cout << "With deductions for FICA and Federal Income Tax" << endl;
//read hours between 0 and 40
hours = readDoubleBetween("Enter hours worked: ", 0.0, 40.0);
//read hourly rate between federal minimum wage of 7.25 and 25.00
//call function here
hourlyRate = readDoubleBetween("Enter hourly rate: ", 7.25, 25.00);
//calculate weekly wage
//call function here
weeklyWage = calcWage( hours, hourlyRate);
//calculate FICA tax at the rate of 7.65%
//call function here
ficaTax = calcFicaTax(weeklyWage);
//Calculate the Weekly Federal Income Tax
//call function here
weeklyFederalIncomeTax = calcFederalTax(weeklyWage);
//print gross wage
cout << endl;
cout << left << setw(22) << "Taxable Income: " << annualTaxableIncome << endl;
cout << left << setw(22) << "Annual Tax at " << percentTaxRate << "% rate: " << federalIncomeTax << endl << endl;
cout << left << setw(13) << "Gross Wage" << right << setw(8) << weeklyWage << endl;
cout << left << setw(13) << "FICA Tax" << right << setw(8) << ficaTax << endl;
cout << left << setw(13) << "Federal Tax" << right << setw(8) << weeklyFederalIncomeTax << endl;
//freeze console window
cout << endl;
system("Pause");
return 0;
} //end main
//-------------------------------------
//Name: readDoubleBetween
//Purpose: read a double between two given values
//Parameters:
// prompt - user prompt
// lowValue - lowest acceptable value
// highValue - highest acceptable value
//Returns: number between lowValue and highValue, inclusively
//-------------------------------------
double readDoubleBetween(string prompt, double lowValue,
double highValue)
{
double numbers = 0.0;
cout << prompt;
cin >> numbers;
while ( numbers < lowValue || numbers > highValue)
{
cout << " Invalid input - must be between " << lowValue << " and " << highValue << endl;
cout << prompt;
cin >> numbers;
}
return (numbers);
}
//-------------------------------------
//Name: calcWage
//Purpose: Calculate weekly wage
//Parameters: hours and hourly wage
//Returns: weeklyWage
//-------------------------------------
double calcWage(double hours, double hourlyRate)
{
double weeklyWage = hours * hourlyRate;
return weeklyWage;
}
//-------------------------------------
//Name: calcFicaTax
//Purpose: Calculate FICA Tax
//Parameters: weeklyWage
//Returns: ficaTax
//-------------------------------------
double calcFicaTax(double weeklyRate)
{
const double FICA_TAX = 7.65 / 100 ; //FICA TAX RATE
double ficaTax = weeklyRate * FICA_TAX;
return ficaTax;
}
//-------------------------------------
//Name: calcFederalTax
//Purpose: Calculate Federal Income Tax
//Parameters: weeklyWage
//Returns: weeklyFederalIncomeTax
//-------------------------------------
double calcFederalTax(double weeklyRate)
{
double federalIncomeTax = 0.0;
double percentTaxRate = 0.0;
double taxRate = 0.0;
double weeklyFederalIncomeTax = 0.0;
const double STANDARD_DEDUCTION = 5800 ; //Standard single filer deduction
double annualTaxableIncome = ( weeklyRate * 52 ) - STANDARD_DEDUCTION;
if (annualTaxableIncome <= 8500)
{
percentTaxRate = 10;
taxRate = percentTaxRate / 100
federalIncomeTax = taxRate * annualTaxableIncome;
weeklyFederalIncomeTax = federalIncomeTax / 52;
}
elseif (annualTaxableIncome > 8500 && annualTaxableIncome < 34500)
{
percentTaxRate = 15;
taxRate = percentTaxRate / 100;
federalIncomeTax = 850 + taxRate * (annualTaxableIncome - 8500);
weeklyFederalIncomeTax = federalIncomeTax / 52;
}
else
{
percentTaxRate = 25;
taxRate = percentTaxRate / 100;
federalIncomeTax = 4750 + taxRate * (annualTaxableIncome - 34500);
weeklyFederalIncomeTax = federalIncomeTax / 52;
}
return weeklyFederalIncomeTax;
}
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