C++ Programming Code Examples C++ > Code Snippets Code Examples Initializing the Members of a Class Using a Constructor Initializing the Members of a Class Using a Constructor This example uses a class that contains a constructor used to initialize the object. The class is called ShoeBox. When supplied with a length, a height, and a width, the object should calculate and display the total area of all sides and the volume. Header File: shoebox.h #ifndef SHOEBOX_H #define SHOEBOX_H class ShoeBox { public: ShoeBox(double l, double h, double w); double getLength() const; double getHeight() const; double getWidth() const; void Properties(); double Area() const; double Volume() const; private: double Length; double Height; double Width; }; #endif Source File: shoebox.h #include <iostream.h> #include "box.h" ShoeBox::ShoeBox(double l, double h, double w) { Length = l; Height = h; Width = w; } double ShoeBox::getLength() const { return Length; } double ShoeBox::getHeight() const { return Height; } double ShoeBox::getWidth() const { return Width; } double ShoeBox::Area() const { return 2 * ((Length * Height) + (Height + Width) + (Length * Width)); } double ShoeBox::Volume() const { return Length * Height * Width; } void ShoeBox::Properties() { cout << "Properties of the shoe box"; cout << "\nLength = " << getLength(); cout << "\nHeight = " << getHeight(); cout << "\nWidth = " << getWidth(); cout << "\nArea = " << Area(); cout << "\nVolume = " << Volume() << "\n\n"; } Header File: cube.h #include "box.h" void main() { ShoeBox Size6(8.65, 4.25, 4.15); Size6.Properties(); } Here is a result of running the program Properties of the shoe box Length = 8.65 Height = 4.25 Width = 4.15 Area = 162.12 Volume = 152.564