// arr5.cpp		By: Aiman Hanna -  ©1993-2002 Aiman Hanna

// This program illustrates arrays of class objects. The program also illustrates how 
// an array of objects can be created using the default constructor then 
// be initialized from an input file. 
// Notice that this program will NEVER compile until you have "tstring.h" which defines 
// the String class, which was provided by a 3rd party (some textbook that we previously used). 
// This is just an example of how severely your program may suffer when you depend on the use 
// a non-standard types.
// You should replace "String" by char* if you do not have access to that file. 

// Key Points:	1) Arrays of class objects
//		2) default constructor


#include "arr5.h"

Car::Car(String mdl , int nd , double mil )
{
	model = mdl;
	numdrs = nd;
	mileage = mil;
}

void Car::SetModel( String mdl)
{
	model = mdl;
}


String Car::GetModel( )
{
	return model;
}


int Car::GetNumDrs()
{
	return numdrs;
}


void Car::SetNumDrs(int nd)
{
	numdrs = nd;
}

double Car::GetMileage()
{
	return mileage;
}

void Car::SetMileage(double mil)
{
	mileage = mil;
}


// Free function to initialize an array of Car objects

void CarInitialize( Car c[], int numobjs, ifstream& infile )
{
	String st;
	int nd, counter = 0;
	double mil;

	infile >> st >> nd >> mil;

	while ((infile) && (counter < numobjs))
	{
	c[counter].SetModel(st);
	c[counter].SetNumDrs(nd);
	c[counter].SetMileage(mil);
	infile >> st >> nd >> mil;
	counter++;
	}
	

}



int main()
{
	// Create an array of 3 cars.
	Car cararr1[3] = {Car("Mercedes", 4, 1000), Car("BMW", 2, 20000), Car("VW", 3, 12000)};
	for (int i = 0; i < 3; i++)
	{
	cout << "\n Here is the information of car #: " << i+1 << endl;
	cout << " The model of the car is: " << cararr1[i].GetModel() << endl;
	cout << " The car has " << cararr1[i].GetNumDrs() << " doors." << endl;
	cout << " The car mileage is: " << cararr1[i].GetMileage() << "." << endl;

	}



	// Create an array of 10 car objects. Information about the objects is
	// placed in the file carinfo.txt, so the objects are to be initialized 
	// from this file. 

	Car cararr2[10]; // This uses the default constructor
	
	// Attempt to open the input file. If successful then pass this open file along with 
	// the array of objects to the function CarInitialize() to initialize 
	// the different objects. The number of objects to be initialized is 
	// also passed to the CarInitialize() function. The file carinfo.txt is 
	// assumed to have at least as many entries as the number of objects passed.

	ifstream fin;
	fin.open("carinfo.txt");
	if (!fin)
	{
		cout << " Could not open file: carinfo.txt for reading. Will exit" << endl;
		exit(1);
	}
	else 
		CarInitialize(cararr2, 10, fin);

	fin.close();


	cout << "\n Here is the information for car objects initialized from carinfo.txt" << endl;
	cout << " ====================================================================" << endl;

	for ( i = 0; i < 10; i++)
	{
	cout << "\n Here is the information of car #: " << i+1 << endl;
	cout << " The model of the car is: " << cararr2[i].GetModel() << endl;
	cout << " The car has " << cararr2[i].GetNumDrs() << " doors." << endl;
	cout << " The car mileage is: " << cararr2[i].GetMileage() << "." << endl;

	}
	
return 0;
}


// The output of the program 

/*
 Here is the information of car #: 1
 The model of the car is: Mercedes
 The car has 4 doors.
 The car mileage is: 1000.

 Here is the information of car #: 2
 The model of the car is: BMW
 The car has 2 doors.
 The car mileage is: 20000.

 Here is the information of car #: 3
 The model of the car is: VW
 The car has 3 doors.
 The car mileage is: 12000.

 Here is the information for car objects initialized from carinfo.txt
 ====================================================================

 Here is the information of car #: 1
 The model of the car is: Mazda
 The car has 4 doors.
 The car mileage is: 12700.

 Here is the information of car #: 2
 The model of the car is: Honda
 The car has 5 doors.
 The car mileage is: 23400.

 Here is the information of car #: 3
 The model of the car is: Nissan
 The car has 3 doors.
 The car mileage is: 12500.

 Here is the information of car #: 4
 The model of the car is: Golf
 The car has 3 doors.
 The car mileage is: 12300.

 Here is the information of car #: 5
 The model of the car is: Ford
 The car has 4 doors.
 The car mileage is: 56000.

 Here is the information of car #: 6
 The model of the car is: Chevrolet
 The car has 4 doors.
 The car mileage is: 21500.

 Here is the information of car #: 7
 The model of the car is: RR
 The car has 4 doors.
 The car mileage is: 45000.

 Here is the information of car #: 8
 The model of the car is: Mercedes
 The car has 4 doors.
 The car mileage is: 14500.

 Here is the information of car #: 9
 The model of the car is: BMW
 The car has 2 doors.
 The car mileage is: 54200.

 Here is the information of car #: 10
 The model of the car is: Honda
 The car has 2 doors.
 The car mileage is: 14800.

*/