C++ Review: Classes Exercises

Exercise 1

Using the file point.cpp, add a member function print to the class Point so that it prints out coordinates as:

	(2, 3)

for a point with coordinates (2, 3). Test it in main().

Exercise 2

Write a definition of a class Rectangle using the Point class. A rectangle is specified by two corner points (bottom left and top right). The sides of the rectangle are parallel to the coordinate axes. The implementation of the class should be as follows:

The private data members of the class include all 4 corner points of the rectangle.
There are two constructors: one takes two points as arguments and creates a rectangle with the first point as the bottom left corner and the second as the top right corner, the other (default) constructor creates a rectangle with the corners (0,0), (1,0), (0,1), (1,1).
Hint: use functions Set_X, Set_Y from the class Point to set the values of the corner points.
The print member function prints all 4 corners of the rectngle, using the member function print of the class Point.

Test the class Rectangle in main(), demonstrate that all member functions work as specified.

Exercise 3

Add two private member functions side1, side2 to the class Rectangle to compute the lengths of the two sides. Using this function, write a public member function to compute the area of the rectangle.

Original page created by Jisook Youn and Jing Zhong for cs111.
Modified by Gali Diamant gali@cs.bu.edu, spring 2003.
Material partially taken from the textbook "Computing Concepts with C++ Essentials", by Horstmann.

Last modified Jan 22, 2003