home *** CD-ROM | disk | FTP | other *** search
- // Chapter 6 - Program 2
- #include "iostream.h"
-
- class box {
- int length;
- int width;
- char *line_of_text;
- public:
- box(char *input_line); //Constructor
- void set(int new_length, int new_width);
- int get_area(void);
- };
-
-
- box::box(char *input_line) //Constructor implementation
- {
- length = 8;
- width = 8;
- line_of_text = input_line;
- }
-
-
- // This method will set a box size to the two input parameters
- void box::set(int new_length, int new_width)
- {
- length = new_length;
- width = new_width;
- }
-
-
- // This method will calculate and return the area of a box instance
- int box::get_area(void)
- {
- cout << line_of_text << "= ";
- return (length * width);
- }
-
-
- main()
- {
- box small("small box "), //Three boxes to work with
- medium("medium box "),
- large("large box ");
-
- small.set(5, 7);
- large.set(15, 20);
-
- cout << "The area of the ";
- cout << small.get_area() << "\n";
- cout << "The area of the ";
- cout << medium.get_area() << "\n";
- cout << "The area of the ";
- cout << large.get_area() << "\n";
-
- }
-
-
-
-
- // Result of execution
- //
- // The area of the small box = 35
- // The area is the medium box = 64
- // The area is the large box = 300