// fig05_09.cpp
// Using default arguments.
#include <iostream>
using namespace std;

// function prototype that specifies default arguments
int boxVolume(int length = 1, int width = 1, int height = 1);

int main() {
   // no arguments--use default values for all dimensions
   cout << "The default box volume is: " << boxVolume();

   // specify length; default width and height
   cout << "\n\nThe volume of a box with length 10,\n"
      << "width 1 and height 1 is: " << boxVolume(10);

   // specify length and width; default height
   cout << "\n\nThe volume of a box with length 10,\n"
      << "width 5 and height 1 is: " << boxVolume(10, 5);

   // specify all arguments 
   cout << "\n\nThe volume of a box with length 10,\n"
      << "width 5 and height 2 is: " << boxVolume(10, 5, 2)
      << '\n';
}

// function boxVolume calculates the volume of a box
int boxVolume(int length, int width, int height) {
   return length * width * height;
}


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