cube.cpp

《c＋＋大学教程实验指导书》源码

// cube.cpp
// member function definitions for class Cube

#include <iostream> 

using std::cout; 
using std::fixed;

#include <iomanip> 

using std::setprecision; 

#include "cube.h"

// default constructor
Cube::Cube( double xValue, double yValue, double zValue, double sideValue ) 
   : Square( xValue, yValue, zValue, sideValue ) 
{ 
   // empty body

} // end class Cube constructor

// function area definition
double Cube::area() const 
{ 
   return 6 * Square::area(); 

} // end function area definition

// function volume definition
double Cube::volume() const 
{ 
   return Square::area() * getSide(); 

} // end function volume

void Cube::print() const
{
   cout << fixed
        << "The lower left coordinate of the cube is: ["
        << setprecision( 2 ) << getX() << ", " << setprecision( 2 )
        << getY() << ", " << setprecision( 2 ) << getZ() 
        << "]\nThe cube side is: " << setprecision( 2 ) << side 
        << "\nThe surface area of the cube is: " << setprecision( 2 )
        << area() << "\nThe volume of the cube is: "
        << setprecision( 2 ) << volume();

} // end function print

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