Write a Program in C++ That Uses Default Arguments

// Using default arguments.

#include <iostream>

using namespace std;

// function prototype that specifies default arguments

unsigned int boxVolume( unsigned int length = 1, unsigned int width = 1,

   unsigned 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 )

      << endl;

} // end main

// function boxVolume calculates the volume of a box

unsigned int boxVolume( unsigned int length, unsigned int width,

   unsigned int height )

{ 

   return length * width * height;

} // end function boxVolume