Issues with PrintStub() Function's ouput - c++

Question

Hopefully you can kind of see where Im going with this. FICA at 7.65%, FedTax at 22 or 28% depending on the amount made, and state tax at 12%. I have to make all of these functions come to an output of:
Name earned $645.00
FICA $xxx.xx
Fed $xxx.xx
State $xxx.xx
Net Pay $xxx.xx
So I believe mathematically I am there, its just setting up for success is where Iam genuinely stuck.
#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <string>
using namespace std;
int hourRate, hourWork, otHours, pay, FICA, state, fed, netpay;
void Pause()
{ string junk, extraNewLine;
cin.ignore();
cout << "Press Enter to continue ... ";
getline(cin, junk);
}
void GetPay(){
pay = (hourRate * hourWork) + (otHours * (hourRate * 1.5));
cout << pay;
}
void GetHrs(){
cout << " Hours worked? ";
cin >> hourWork;
if (hourWork > 40){
otHours = hourWork - 40;
hourWork - otHours;
}
else {
otHours = 0;
}
}
void GetRate(){
cout << "Hourly Rate? ";
cin >> hourRate;
}
void CalcFCIA(){
FICA = pay *.0765;
cout << FICA;
}
void CalcFedTax(){
if (pay > 1500){
fed = pay * .28;
}
else {
fed = pay * .22;
}
}
void CalcStateTax(){
state = pay * .12;
cout << state;
}
void PrintStub(){
cout << "FICA $" + FICA;
cout << "Fed $" + fed;
cout << "State $" + state;
netpay = pay - (FICA + fed + state);
cout << "Net Pay" + netpay;
}
int main()
{
string name;
cout << "Employee name? ";
cin >> name;
GetRate();
GetHrs();
PrintStub();
Pause();
}
My output is not displaying any integers. I am only getting:
FICA $Fed $State $Net Pay

Answer 1

You don't appear to be calling any of the Calc functions. Each of them will have to be called in order to have any effect.
Also, it will likely help you follow the logic to write functions that return values rather than operating on global variables -- it makes the transformations you're doing on the data much more explicit. For example, you could use functions like:
int CalcFICA(int pay){
return pay * .0765;
}