Thread: I could use some help please

I think you should tell us what is should be outputting that it isn't. I compiled and run it and it works "just fine", ignoring the warnings:

Code:

In function ‘int main()’:
25:9: warning: unused variable ‘vechileExpense’ [-Wunused-variable]
  double vechileExpense;
         ^~~~~~~~~~~~~~
32:9: warning: variable ‘mealTotal’ set but not used [-Wunused-but-set-variable]
  double mealTotal;
         ^~~~~~~~~
33:9: warning: unused variable ‘total’ [-Wunused-variable]
  double total;
         ^~~~~
37:9: warning: unused variable ‘nightlyRate’ [-Wunused-variable]
  double nightlyRate;
         ^~~~~~~~~~~
49:6: warning: variable ‘d’ set but not used [-Wunused-but-set-variable]
  int d;
      ^
50:9: warning: unused variable ‘parkingSpent’ [-Wunused-variable]
  double parkingSpent;
         ^~~~~~~~~~~~
51:9: warning: variable ‘taxiSpent’ set but not used [-Wunused-but-set-variable]
  double taxiSpent;
         ^~~~~~~~~
In function ‘void getParkingAmount(double&, double&)’:
244:6: warning: unused variable ‘days’ [-Wunused-variable]
  int days;
      ^~~~
242:51: warning: unused parameter ‘allowedParking’ [-Wunused-parameter]
 void getParkingAmount(double &parkingFee, double &allowedParking){
                                                   ^~~~~~~~~~~~~~
In function ‘void getTaxiAmount(double&, double&)’:
259:6: warning: unused variable ‘days’ [-Wunused-variable]
  int days;
      ^~~~
257:46: warning: unused parameter ‘allowedTaxiFee’ [-Wunused-parameter]
 void getTaxiAmount (double &taxiFee, double &allowedTaxiFee){
                                              ^~~~~~~~~~~~~~
In function ‘void getHotelAmount(double&, double&)’:
289:9: warning: variable ‘hotelFeeTotal’ set but not used [-Wunused-but-set-variable]
  double hotelFeeTotal;
         ^~~~~~~~~~~~~
290:6: warning: unused variable ‘days’ [-Wunused-variable]
  int days;
      ^~~~
287:46: warning: unused parameter ‘allowedHotelFee’ [-Wunused-parameter]
 void getHotelAmount(double &hotelFee,double &allowedHotelFee){
                                              ^~~~~~~~~~~~~~~
In function ‘void getMealAmount(double&, double&)’:
309:6: warning: unused variable ‘day’ [-Wunused-variable]
  int day;
      ^~~
314:9: warning: unused variable ‘firstDay’ [-Wunused-variable]
  double firstDay;
         ^~~~~~~~
315:9: warning: unused variable ‘lastDay’ [-Wunused-variable]
  double lastDay;
         ^~~~~~~
307:28: warning: unused parameter ‘allowedMealTotal’ [-Wunused-parameter]
 void getMealAmount(double &allowedMealTotal, double &spentMealTotal){
                            ^~~~~~~~~~~~~~~~
307:54: warning: unused parameter ‘spentMealTotal’ [-Wunused-parameter]
 void getMealAmount(double &allowedMealTotal, double &spentMealTotal){
                                                      ^~~~~~~~~~~~~~
In function ‘int main()’:
72:13: warning: ‘airfareFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  airfareFee = getAirfareAmount (airfareFee);
  ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74:15: warning: ‘carRentalFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  carRentalFee = getCarRentalAmount (carRentalFee);
  ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
76:27: warning: ‘privateCarFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  getPrivateVechileExpense (privateCarFee);
  ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
92:18: warning: ‘registrationFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  registrationFee = getRegistrationFee (registrationFee);
  ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
110:28: warning: ‘breaksfastFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  mealTotal = breaksfastFee + lunchFee + dinnerFee; 
              ~~~~~~~~~~~~~~^~~~~~~~~~
110:28: warning: ‘lunchFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
110:12: warning: ‘dinnerFee’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  mealTotal = breaksfastFee + lunchFee + dinnerFee; 
  ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
145:33: warning: ‘hotelFeeTotal’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << "Hotel" << setw(22) << hotelFeeTotal << setw(20) << allowedHotelFee << endl;
                                 ^~~~~~~~~~~~~

At line 319, it will never execute the loop because "days" is set to zero:

Code:

for(int day = 1; day <= days; day++){

> void getMealAmount(double &allowedMealTotal, double &spentMealTotal){
You never compare with allowedMealTotal
You never update spentMealTotal