// inline function that calculates the volume of a cube.
#include <iostream>
using namespace std;
// Definition of inline function cube. Definition of function appears
// before function is called, so a function prototype is not required.
// First line of function definition acts as the prototype.
inline double cube( const double side )
{
return side * side * side; // calculate cube
} // end function cube
int main()
{
double sideValue; // stores value entered by user
cout << "Enter the side length of your cube: ";
cin >> sideValue; // read value from user
// calculate cube of sideValue and display result
cout << "Volume of cube with side "
<< sideValue << " is " << cube( sideValue ) << endl;
} // end main
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