Category : C++ Source Code
Archive   : CPPTUT.ZIP
Filename : OBJDYNAM.CPP

 
Output of file : OBJDYNAM.CPP contained in archive : CPPTUT.ZIP
// Chapter 6 - Program 4
#include

class box {
int length;
int width;
public:
box(void); //Constructor
void set(int new_length, int new_width);
int get_area(void);
};


box::box(void) //Constructor implementation
{
length = 8;
width = 8;
}


// 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)
{
return (length * width);
}


main()
{
box small, medium, large; //Three boxes to work with
box *point; //A pointer to a box

small.set(5, 7);
large.set(15, 20);

point = new box; // Use the defaults supplied by the constructor

cout << "The small box area is " << small.get_area() << "\n";
cout << "The medium box area is " << medium.get_area() << "\n";
cout << "The large box area is " << large.get_area() << "\n";

cout << "The new box area is " << point->get_area() << "\n";
point->set(12, 12);
cout << "The new box area is " << point->get_area() << "\n";

delete point;
}




// Result of execution
//
// The small box area is 35
// The medium box area is 64
// The large box area is 300
// The new box area is 64
// The new box area is 144


  3 Responses to “Category : C++ Source Code
Archive   : CPPTUT.ZIP
Filename : OBJDYNAM.CPP
”

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    January 27, 2013 at 3:59 pm

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    March 18, 2014 at 4:57 pm

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