IMPLEMENT OOP IN C++ CAR RENTAL SCHEME WE WILL SIMULATE A SCHEME WHICH WILL LET

Question

IMPLEMENT OOP IN C++

CAR RENTAL SCHEME

WE WILL SIMULATE A SCHEME WHICH WILL LET US DECIDE THE CONDITION THE CAR IS RECEIVED BACK IN THE COMPANY'S GARAGE. THIS WILL BE A SIMPLE MEMORY GAME, YOUR PERFORMANCE WILL DETERMINE THE CONDITION THE CAR IS RETURNED IN BACK TO THE COMPANY

YOU WILL BE SHOWN A COUPLE OF TRAFFIC STATISTICS FIRST for eg.
*STAT1 - go straight 100m{ * display for 2 seconds, then clear system screen})

*STAT2 - Turn at roundabout , then go left, {display for 2 secs, clear system screen})

and so on, there will be 4 statistics max.


THE VEHICLE WOULD HAVE TO COVER A CERTAIN DISTANCE, AND THROUGHOUT THIS JOURNEY, USER WILL BE QUIZZED REGULARLY ABOUT THE STATISTICS SHOWN PREVIOUSLY (4 questions max.) . A SIMPLE SCORING SYSTEM WILL BE INTRODUCED, WHERE EACH INCORRECT ANSWER WILL RESULT IN THE CAR'S CONDITION DETERIORATING.(eg. if(wrong answer) {car cond-=10;} ) THE USERS CAR SHOULD MOVE ON SMOOTHLY EVEN IF HE ANSWERS INCORRECTLY, AND COMPLETE SPECIFIED DISTANCE FOR EXAMPLE 100 KILOMETERS.

===MY VIEW
I was thinking to maybe approach this by operator overloading , i.e unary overload
eg. ++c1, for first question. --c1 for second question, and so on while a function advances the position ofthe car(A specified length would have to be covered, before game is over.)
IF YOU DRIVE TOO RASHLY( Answer 2 ques. wrong consecutively)---BEWARE!!!- A police car will retrace your path (no graphics of course!) with with greater speed (func. that advances position runs faster). And we can check by binary operator overload , for when distances travelled by police car and user car are same. There culprit will be caught (user car moves no more, stays where it is!)

The user would constantly be updated when faced with a question eg. "u hav covered 45 out of 200 total kilometers, but answer this question NOW! (INSERT QUEST. BASED ON STAT SHOWN PREVIOUSLY)"

TOPICS WE HAVE COVERED: CLASSES AND OBJECTS, OPERATOR OVERLOADING, INHERITANCE, POLYMORPHISM, FUNCTION OVERLOADING, ARRAYS AS CLASS MEMBERS

Explanation / Answer

OK use this.

/* * Calculation note: * 1Day = 86400 secs * 1Hour = 3600 secs * 1Min = 60 secs * Created on April 11, 2010, 1:02 PM */  #include <iostream> #include <time.h>  /* using std::cout; using std::cin; using std::endl; */  struct CarStruct { char plateNumber[7]; bool available; int userId; time_t rentalTime; time_t returnTime; };  struct UserStruct { char name[10]; int carRented; };  struct timeHMS { int hour, minute, seconds; };  CarStruct car_array[10]; UserStruct user_array[3];  //function prototype int showMainMenu(); char * login(); void showName(int); int rentCar(); void returnCar(); int timeChargePerUnit = 3600; //1 hour in seconds int limitRentalSeconds = timeChargePerUnit * 24; //24hours float damageFineAmount = 50; int toggleAvailability(int); void checkCarAvailability(int); void printTime(); double diffTime(time_t, time_t); float lateCharges(double); float getCharges(double); void charge(double); bool rentedCar = false; int numberOfUsers = 3; int currentUserIndex; time_t currentTime; time_t rentalTime, returnTime; timeHMS duration(int);  //initialize cars void initializeCar() { char plateNum[10][7] = { {'P', 'E', 'A', '1', '2', '3', '4'}, {'P', 'F', 'Y', '4', '0', '4', '7'}, {'P', 'J', 'G', ' ', '4', '4', '2'}, {'P', 'C', 'A', '2', '0', '4', '3'}, {'P', 'A', 'W', '6', '8', '2', '4'}, {'A', 'B', 'C', '3', '3', '6', '5'}, {'P', 'F', 'S', '2', '6', '4', '6'}, {'P', 'C', 'A', '7', '0', '4', '7'}, {'P', 'E', 'D', '1', '2', '4', '8'}, {'P', 'B', 'G', '5', '7', '9', '9'} };  for (int i = 0; i < 10; i++) { for (int j = 0; j < 7; j++) { car_array[i].plateNumber[j] = plateNum[i][j]; } car_array[i].available = true; } }  void initializeUser() { char user[3][10] = { {'J', 'e', 'n', 'n', 'i', 'f', 'e', 'r', ' ', ' '}, {'N', 'o', 'r', 'd', 'i', 'n', ' ', ' ', ' ', ' '}, {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '} }; for (int i = 0; i < 3; i++) { for (int j = 0; j < 10; j++) { user_array[i].name[j] = user[i][j]; } user_array[i].carRented = -1; } }  //main menu  int main() { initializeCar(); initializeUser(); int mainMenuSelection;  char input;  bool running = true; do { numberOfUsers = 3; //greet and login cout << "Hi, are you a registered user?" << endl; for (int i = 0; i < 3; i++) { if (user_array[i].name[0] != ' ') { cout << i << " : "; for (int j = 0; j < 10; j++) { cout << user_array[i].name[j]; } cout << endl; } else { numberOfUsers = i; i = 4; } } if (numberOfUsers < 3) { cout << "3 : [New User]" << endl; } cout << "Your selection: "; cin >> currentUserIndex;  if (currentUserIndex == 9) { //admin mode }  if (currentUserIndex == 3) { cout << "Please enter your name" << endl;  for (int i = 0; i < 10; i++) { cin >> input; if (input == '.') { i = 10; } else { user_array[numberOfUsers].name[i] = input; } } user_array[numberOfUsers].carRented = -1; currentUserIndex = numberOfUsers; }  cout << endl << "welcome "; showName(currentUserIndex); cout << endl; //main menu mainMenuSelection = showMainMenu(); if (mainMenuSelection == 0) { running = false; cout << "==========thank you==========" << endl << endl; } else if (mainMenuSelection == 1) { if (user_array[currentUserIndex].carRented != -1) { returnCar(); cout << "==========thank you==========" << endl << endl; } else { rentCar(); cout << "==========thank you==========" << endl << endl; } } } while (running);  return (EXIT_SUCCESS); }  char * login() { char in, username[10]; int count = 0; cout << "Hi, please enter your name" << endl; do { username[count] = in; in = getchar(); count++; } while (in != ' ');  return username; }  void showName(int index) { for (int i = 0; i < 10; i++) { cout << user_array[index].name[i]; } }   //shows the main menu int showMainMenu() { int mainMenuChoice = 0; printTime(); cout << "Please select service" << endl;  if (user_array[currentUserIndex].carRented != -1) { cout << "1: return a car" << endl; } else { cout << "1: rent a car" << endl; } cout << "0: exit" << endl; //TODO: put in menu cin >> mainMenuChoice; return mainMenuChoice; }  //to rent car  int rentCar() { int carSelection; cout << "please select a car to rent" << endl; for (int i = 0; i < 10; i++) { cout << i << ": "; for (int j = 0; j < 7; j++) { cout << car_array[i].plateNumber[j]; } cout << " - "; if (car_array[i].available) { cout << "available"; } else { cout << "unavailable"; } cout << endl; } cin >> carSelection;  if (car_array[carSelection].available == false) { cout << "please select another car, this car is not available" << endl; carSelection = -1; } else { car_array[carSelection].available = false; user_array[currentUserIndex].carRented = carSelection; car_array[carSelection].rentalTime = time(&rentalTime); } return carSelection; }  void returnCar() { int rentedCarIndex = user_array[currentUserIndex].carRented; int _rentalTime = car_array[rentedCarIndex].rentalTime; int _returnTime = time(&currentTime); double rentalDuration = diffTime(_rentalTime, _returnTime);  car_array[rentedCarIndex].available = true; user_array[currentUserIndex].carRented = -1;  charge(rentalDuration); }  void printTime() { time(&currentTime); cout << ctime(&currentTime); }  double diffTime(time_t rentalTime, time_t returnTime) { double diff = difftime(returnTime, rentalTime); return diff; }  void showPlateNumber(int carIndex) { int count = 0; while (count < 7) { cout << car_array[carIndex].plateNumber[count]; } }  void charge(double rentalDuration) { float charge; char damaged; timeHMS rentHMS = duration(rentalDuration); if (rentalDuration > limitRentalSeconds) { cout << "you are late " << (rentHMS.hour - 24 )<< " hours!"; charge = lateCharges(rentalDuration); } else { cout << "please pay rental for duration of " << rentHMS.hour << ":"<<rentHMS.minute<<":"<<rentHMS.seconds<<"."<< endl; charge = getCharges(rentalDuration); } cout << "Car damaged? y/n:"; cin >> damaged; if (damaged == 'y') { cout << endl << "car damaged, " << damageFineAmount << " is charged" << endl; charge = damageFineAmount + charge; } cout << "total rental charge amount: " << charge << endl; }  float getCharges(double rentalDuration) { int unitCharged = rentalDuration / timeChargePerUnit; return unitCharged * 5; //sewa sejam 5 ringgit }  float lateCharges(double rentalDuration) { rentalDuration = rentalDuration - limitRentalSeconds; int unitCharged = rentalDuration / timeChargePerUnit; return (unitCharged * 10)+getCharges(limitRentalSeconds); //bayar jumlah denda (RM10 sejam) + sewa utk 24 jam }  timeHMS duration(int total_seconds) { int hour = 3600; int minute = 60; timeHMS returnDuration; returnDuration.hour = total_seconds / hour; total_seconds = total_seconds % hour; returnDuration.minute = total_seconds / minute; total_seconds = total_seconds % minute; returnDuration.seconds = total_seconds; return returnDuration; }

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