Review List for the first week of 21-day student C ++

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# Include <iostream>

Using namespace std;

Enum CHOICE {DrawRect = 1, GetArea, GetPerim,

ChangeDimensions, Quit };

 

// Rectangle class declaration

Class Rectangle

{

Public:

// Construcors

Rectangle (int width, int height );

~ Rectangle ();

// Accessors

Int GetHeight () const {return itsHeight ;}

Int GetWidth () const {return itsWidth ;}

Int GetArea () const {return itsHeight * itsWidth ;}

Int GetPerim () const {return 2 * itsHeight + 2 * itsWidth ;}

Void SetSize (int newWidth, int newHeight );

// Misc. methods

Private:

Int itsWidth;

Int itsHeight;

};

 

// Class method implementations

Void Rectangle: SetSize (int newWidth, int newHeight)

{

ItsWidth = newWidth;

ItsHeight = newHeight;

}

 

Rectangle: Rectangle (int width, int height)

{

ItsWidth = width;

ItsHeight = height;

}

 

Rectangle ::~ Rectangle (){}

 

Int DoMenu ();

Void DoDrawRect (Rectangle );

Void DoGetArea (Rectangle );

Void DoGetPerim (Rectangle );

 

Int main ()

{

// Initialize a rectangle to 30,5

Rectangle theRect (30, 5 );

Int choice = DrawRect;

Int fQuit = false;

While (! FQuit)

{

Choice = DoMenu ();

If (choice <DrawRect | choice> Quit)

{

Cout <"Invalid Choice, please try again .";

Continue;

}

Switch (choice)

{

Case DrawRect:

DoDrawRect (theRect );

Break;

Case GetArea:

DoGetArea (theRect );

Break;

Case GetPerim:

DoGetPerim (theRect );

Break;

Case ChangeDimensions:

Int newLength, newWidth;

Cout <"New width :";

Cin> newWidth;

Cout <"New height :";

Cin> newLength;

TheRect. SetSize (newWidth, newLength );

DoDrawRect (theRect );

Break;

Case Quit:

FQuit = true;

Cout <"Exiting ...";

Break;

Default:

Cout <"Error in choice! ";

FQuit = true;

Break;

} // End switch

} // End while

Return 0;

} // End main

 

Int DoMenu ()

{

Int choice;

Cout <"*** Munu ***";

Cout <"(1) Draw Rectangle ";

Cout <"(2) Area ";

Cout <"(3) Perimeter ";

Cout <"(4) Resize ";

Cout <"(5) Quit ";

Cin> choice;

Return choice;

}

 

Void DoDrawRect (Rectangle theRect)

{

Int height = theRect. GetHeight ();

Int width = theRect. GetWidth ();

For (int I = 0; I

{

For (int j = 0; j <width; j ++)

Cout <"*";

Cout <"";

}

}

 

Void DoGetArea (Rectangle theRect)

{

Cout <"Area:" <theRect. GetArea () <endl;

}

 

Void DoGetPerim (Rectangle theRect)

{

Cout <"Perimeter:" <theRect. GetPerim () <endl;

}