Explain why using the : method to initialize data members in a constructor is better than initializing them in the body of the constructor. In other words, why is the first better than the second.

1)

Car (double weight, double speed)

: mWeight(weight),

mSpeed(speed)

{}

2)

Car (double weight, double speed) {

mWeight = weight;

mSpeed = speed;

}

b)

All logic related to a new object instance is put in a _______.

	a.	Fully Parametrized Constructor
	b.	Main Function
	c.	Setter Function
	d.	Default Constructor

c)

Assume the following code is put in Rectangle.cpp, create the class declaration that would be put in Rectangle.h. Assume all data members are private and all function members are public.

#include "Rectangle.h"

Rectangle::Rectangle(double length, double width)

: mLength(length),

mWidth(width)

{

mArea = mLength * mWidth;

}

Rectangle::Rectangle()

: Rectangle(0.0, 0.0)

{

}

void setLength(double length) {

mLength = length;

mArea = mLength * mWidth;

}

void setWidth(double width) {

mWidth = width;

mArea = mLength * mWidth;

}

double getArea() {

return mArea;

}