// Example 3.2. Program to display the floor space for a room

#include <iostream>

using namespace std;

int main()
{
   void directions();	// prototypes
   int  getDim();
   int  area(int dim1, int dim2); 

   int dim1;		// one dimension of the room
   int dim2;		// another dimension of the room
   int floorSpace;	// area of floor in room
 
   directions();

   dim1        = getDim();
   dim2        = getDim();
   floorSpace  = area(dim1, dim2);

   cout  << endl << "The floor space is " << floorSpace
         << " square feet." << endl;

   return 0;
}

//
// Function to print program directions
// Pre:  none
// Post: Program directions have been printed.
//

void directions()
{
   cout << "This program will give you the floor space ";
   cout << "in square feet" << endl;
   cout << "for a room of your choosing." << endl << endl;
}

//
// Function to prompt the user for one dimension
// of a floor and to return that dimension
// Pre:  none
// Post: The function has returned an integer dimension.
//

int getDim()
{
   int dimension; 	// one dimension of floor

   cout << "Type one dimension of the floor in feet: ";
   cin  >> dimension;

   return dimension;
}

//
// Function to calculate the floor space (area of the floor)
// given two dimensions (length and width).
// Pre:  dim1 and dim2 are integer dimensions.
// Post: The function has returned the integer floor space.
//

int area(int dim1, int dim2)
{
   return (dim1 * dim2);
}