Inheritance, overriding methods and basic UI help!

[Provoke]

Hi guys,

So I'm studying computer science and I've been given a (pretty basic) assignment, which I can't get my head around at all!!

The tasks are as follows:

1. Implement the outlined class structure including the attributes and methods as detailed in the class diagrams.

2. Override the getVechicleDetails method so that you can create a vehicle and pass the required information to the method.

And this is the class structure i've been given:

http://puu.sh/88p8O/dde80163ad.png

With these methods:

http://puu.sh/88p9X/a46d0cfd1a.png

I did this correctly, However, the extension task in this assignment I feel makes the task 2 redundant:

http://puu.sh/88pcY/e50d793753.png


Any ideas how I could implement this basic console UI which the extension task is asking for? I'm completely stuck!!

Thanks.

#include <iostream>
#include <string>
#include <fstream>
#include <conio.h>
 
using namespace std;
 
 
class vehicle {
 
public:	
 
string manufacturer;
int year;
string regnum;
 
void getVehicleDetails() {	
cout << "Please enter the details for your vehicle"<< endl;
cout << "Please enter the manufacturer of your vehicle: "<< endl;
cin >> manufacturer;
cout << "Please enter the year of your vehicle's manufacture: "<< endl;
cin >> year;
cout << "Please enter your vehicle's registration number: "<< endl;
cin >> regnum;
cout << "Thank your for your details"<< endl;
}
 
 
void printVehicleDetails() {
 
cout << "Your vehicle's details are as follows: " << endl;
cout << "Your Vehicle's manufacturer is " << manufacturer << endl;
cout << "Your Vehicle's year of manufacture is " << year << endl;
cout << "Your Vehicle's registration number is " << regnum << endl;
}
void saveVehicleDetails() {
 
ofstream vehiclefile;
vehiclefile.open ("vehicle.txt");
vehiclefile << "***Your Vehicle's Details***" << endl;
vehiclefile << "Manufacturer:" << manufacturer << endl;
vehiclefile << "Year of Manufacture:" << year << endl;
vehiclefile << "Registration Number: " << regnum << endl;
vehiclefile.close();
}
 
void openVehicleDetails() {
 
}
};
 
 
class car : public vehicle{
 
public:
 
int numpassengers;
string cartype;
 
void getCarDetails() {	
 
cout << "Please enter the details for your Car"<< endl;
cout << "Please enter the number of maximum passengers your car can hold: "<< endl;
cin >> numpassengers;
cout << "Please enter the car body type: "<< endl;
cin >> cartype;
cout << "Thank your for your details"<< endl;
}
 
void printCarDetails() {
 
cout << "Your car's details are as follows: " << endl;
cout << "Your car's maximum passengers is: " << numpassengers << endl;
cout << "The body type of your car is: " << cartype << endl;
}
void saveCarDetails() {
 
ofstream vehiclefile;
vehiclefile.open ("vehicle.txt");
vehiclefile << "Car or Lorry: Car" << endl;
vehiclefile << "Number of passengers: " << numpassengers << endl;
vehiclefile << "Type of car: " << cartype << endl;
vehiclefile.close();
}
};
 
 
class lorry : public vehicle{
 
public:
 
double tonnage;
string bodtype;
 
void getLorryDetails() {
 
cout << "Please enter the details for your Lorry"<< endl;
cout << "Please enter the gross weight of your Lorry: "<< endl;
cin >> tonnage;
cout << "Please enter the body type of your Lorry: "<< endl;
cin >> bodtype;
cout << "Thank your for your details"<< endl;
}
 
void printLorryDetails() {
 
cout << "Your lorry's details are as follows: " << endl;
cout << "Your lorry's maximum weight is: " << tonnage << endl;
cout << "The body type of your lorry is: " << bodtype << endl;
}
void saveLorryDetails() {
 
ofstream vehiclefile;
vehiclefile.open ("vehicle.txt");
vehiclefile << "Car or Lorry: Lorry" << endl;
vehiclefile << "Maximum weight: " << tonnage << endl;
vehiclefile << "Body type: " << bodtype << endl;
vehiclefile.close();
}
 
};
 
 
void vehiclemenu();
void carmenu();
void lorrymenu ();
 
int main () {
 
int flag = 0;
 
while (flag == 0) {
char choice;
 
cout << "***Main Menu***" << endl;	//Menu to allow ease of access within the program.
cout << "Select by letter:" << endl;
cout << "1 - Vehicle" << endl;
cout << "2 - Lorry" << endl;
cout << "3 - Car" << endl;
cout << "4 - Quit" << endl;
cin >> choice;	
 
switch(choice) {
case '1':
vehiclemenu();
break;
 
case '2':
lorrymenu();
break;
 
case '3':
carmenu();
break;
 
case '4':
flag = 1;
break;
 
 
default:
cout << "\nInvalid selection. Press a key to return to main menu.";
}
 
}
if (flag == 1) {
return 0;
}
}
 
 
 
 
void vehiclemenu() {
 
char choice;
int ifchoice = 0;
vehicle veh;
 
cout << "***Main Menu***" << endl;	//Menu to allow ease of access within the program.
cout << "Select by letter:" << endl;
cout << "1 - Add new entry" << endl;
cout << "2 - Show entry" << endl;
cout << "3 - Save entry" << endl;
cout << "4 - Open saved document" << endl;
cout << "5 - Delete entry" << endl;
cin >> choice;	
 
switch(choice) {
case '1':
 
cout << "Is your vehicle a Car or a Lorry? " << endl;
cout << "Press '1' for Car " << endl;
cout << "Press '2' for Lorry " << endl;
cin >> ifchoice;
 
if (ifchoice == 1)
{
carmenu();
}
if (ifchoice == 2)
{
lorrymenu();
}
break;
 
case '2':
veh.printVehicleDetails();
break;
 
case '3':
veh.saveVehicleDetails();
break;
 
case '4':
veh.openVehicleDetails();
break;
 
case '5':
veh.~vehicle();
break;
 
default:
cout << "\nInvalid selection. Press a key to return to main menu.";
}
 
}
 
void carmenu() {
 
char choice;
car car;
vehicle veh;
 
cout << "***Main Menu***" << endl;	//Menu to allow ease of access within the program.
cout << "Select by letter:" << endl;
cout << "1 - Add new entry" << endl;
cout << "2 - Show entry" << endl;
cout << "3 - Save entry" << endl;
cout << "4 - Open saved document" << endl;
cout << "5 - Delete entry" << endl;
cin >> choice;	
 
switch(choice) {
case '1':
car.getVehicleDetails();
car.getCarDetails();
break;
 
case '2':
car.printVehicleDetails();
car.printCarDetails();
break;
 
case '3':
car.saveVehicleDetails();
car.saveCarDetails();
break;
 
case '4':
car.openVehicleDetails();
break;
 
case '5':
veh.~vehicle();
break;
 
default:
cout << "\nInvalid selection. Press a key to return to main menu.";
}
 
}
 
void lorrymenu() {
 
char choice;
lorry lor;
vehicle veh;
 
cout << "***Main Menu***" << endl;	//Menu to allow ease of access within the program.
cout << "Select by letter:" << endl;
cout << "1 - Add new entry" << endl;
cout << "2 - Show entry" << endl;
cout << "3 - Save entry" << endl;
cout << "4 - Open saved document" << endl;
cout << "5 - Delete entry" << endl;
cin >> choice;	
 
switch(choice) {
case '1':
lor.getVehicleDetails();
lor.getLorryDetails();
break;
 
case '2':
lor.printLorryDetails();
break;
 
case '3':
lor.saveLorryDetails();
break;
 
case '4':
lor.openVehicleDetails();
break;
 
case '5':
veh.~vehicle();
break;
 
default:
cout << "\nInvalid selection. Press a key to return to main menu.";
}
 
}

[Provoke]

I'm not asking for direct 'HOW DO I DO THIS'
Just, a pointer in the right direction, as I am completely confused.

[CodeGoggles]

Are you asking how to make the sentinel controlled loop?

If so just create a infinite loop with a menu item that once chosen will break the loop

for (;;)
{
	// Do Stuff

	if (/* user controlled condition*/)
	{
		break;
	}
}

// Or while

while (1)
{
	// Do Stuff

	if (/* user controlled condition*/)
	{
		break;
	}
}

ya looking at the program it does need a sentinel controlled loop