// composition2.cpp 	By: Aiman Hanna -  ©1993-2006 Aiman Hanna

// This program is very similar to composition1.cpp. The main difference between the 
// two programs is that this program does not have default constructors for the 
// supplier classes. 
// The significant point here is that you must make sure that the supplier class 
// objects are initialized. 

// Key Points: 	 1) Initializing objects of the supplier classes.

#include "composition2.h"

// Implementation of the Engine class

Engine::Engine(double hp, double pr)
{
 cout << "\n Creating an Engine object. " << endl;
 horsepower = hp;
 price = pr;
} 



double Engine::GetEngHp( void )
{
 return horsepower;
}



void Engine::SetEngHp( double hp )
{
 horsepower = hp;
}



double Engine::GetEngPrice( void )
{
 return price;
}



void  Engine::SetEngPrice( double pr )
{
 price = pr;
}




























// Implementation of the CarBody class

CarBody::CarBody( ava_color cl, double pr )
{
 cout << " Creating a CarBody object. " << endl;
 color = cl;
 price = pr;
}



ava_color CarBody::GetCarBodyColor( void )
{
 return color; 
}



void CarBody::SetCarBodyColor( ava_color cl )
{
 color = cl;
}



double CarBody::GetCarBodyPrice( void )
{
 return price;
}



void CarBody::SetCarBodyPrice( double pr )
{
 price = pr;
}




// Implementation of the Car class

Car::Car( double hp, ava_color cl, double engpr, double bodpr ):eng(hp, engpr),
                                                                    body(cl, bodpr)
{
 cout << " Creating an CarBody object. " << endl;
 
 // Since there is no default constructor for the supplier classes, the "eng" 
 // and "body" will not be initialized when they are created ( that is actually when a
 // Car object is created). As a result, these two objects must be initialized first
 // upon creating the Car object. 

 // Notice that there is no way to initialize these objects within the class 
 // declaration since this in not allowed by the language. Hence, you must use 
 // initialization list for that. 

  
 // Initial price of the car is set to 1.5 * ( engine price + body price )

 price = 1.5 * ( eng.GetEngPrice() + body.GetCarBodyPrice() );
 // The above line has the same effect as: price = 1.5 * ( engpr + bodpr );

}											      














double Car::GetCarHorsepower( void )
{
return eng.GetEngHp( );

}



void Car::SetCarHorsepower( double hp )
{
 eng.SetEngHp( hp );
}





double Car::GetCarPrice( void )
{
 return price;
}




void Car::SetCarPrice( double pr )
{
// Set the car price is the passed value. If the price is less than the total price of the
// engine and the body, issue a warning message. 

 price = pr;
 if ( price < ( eng.GetEngPrice() + body.GetCarBodyPrice() ) )
  cout << " Warning: Selling with that price is a losing sale. Verify the price. " << endl;
}




void Car::SetCarColor( ava_color cl )
{
 body.SetCarBodyColor( cl );
}




char* Car::GetCarColor( void )
{
 switch (body.GetCarBodyColor())
 {
   case white: return "white";
   		 // There is no  need for "break" here 
   case black: return "black";
   	
   case blue:  return "blue";
   		
   case green: return "green";
   	
   case red: return "red";
   		
  };
   return "Unknown";
}











void Car::ShowCarInfo()
{
cout << " The car has a horsepower of: " << GetCarHorsepower( ) 
     << " and the color of the car is: " << GetCarColor() << "." << endl
     << " The price of this car is: " << GetCarPrice() << endl;   

}






// main function 

int main()
{
 Car c1, c2, c3;	// Create 3 car objects.

 cout << " \n Here is the information of car object c1: " << endl;
 c1.ShowCarInfo();
 
 cout << " \n Here is the information of car object c2: " << endl;
 c2.ShowCarInfo();
 
 cout << " \n Here is the information of car object c3: " << endl;
 c3.ShowCarInfo();



 cout << " \n Here is the information of car object c1 after updates: " << endl;

 c1.SetCarColor( black );
 c1.SetCarHorsepower( 200 );
 c1.SetCarPrice( 7000 );
 c1.ShowCarInfo();


 cout << " \n Here is the information of car object c2 after updates: " << endl;

 c2.SetCarColor( red);
 c2.SetCarHorsepower( 250 );
 c2.SetCarPrice( 5000 );
 c2.ShowCarInfo();

 
 cout << " \n Here is the information of car object c3 after updates: " << endl;

 c3.SetCarColor( blue);
 c3.SetCarHorsepower( 300 );
 c3.SetCarPrice( 20000 );
 c3.ShowCarInfo();

 return 0;
}





















// The result of running the program 
/*
 Creating an Engine object.
 Creating a CarBody object.
 Creating an CarBody object.

 Creating an Engine object.
 Creating a CarBody object.
 Creating an CarBody object.

 Creating an Engine object.
 Creating a CarBody object.
 Creating an CarBody object.

 Here is the information of car object c1:
 The car has a horsepower of: 40 and the color of the car is: white.
 The price of this car is: 9000

 Here is the information of car object c2:
 The car has a horsepower of: 40 and the color of the car is: white.
 The price of this car is: 9000

 Here is the information of car object c3:
 The car has a horsepower of: 40 and the color of the car is: white.
 The price of this car is: 9000

 Here is the information of car object c1 after updates:
 The car has a horsepower of: 200 and the color of the car is: black.
 The price of this car is: 7000

 Here is the information of car object c2 after updates:
 Warning: Selling with that price is a losing sale. Verify the price.
 The car has a horsepower of: 250 and the color of the car is: red.
 The price of this car is: 5000

 Here is the information of car object c3 after updates:
 The car has a horsepower of: 300 and the color of the car is: blue.
 The price of this car is: 20000
*/