// Chapter 4 program requiring functions to perform program details.

// Program name:  Paint

// Win32 console applications



#include < iostream.h >

#include < stdio.h >

#include < iomanip.h >



void dimensions (double &l,double &w);

void price (double &wp,double &cp);

void wallfigures (double &wa,double &wg,double wpg,double &wc);

void ceilingfigures (double &ca,double &cg,double cpg,double &cc);

void display(double wg,double cg,double wc,double cc);



const double HEIGHT = 8.0;

const double COVER = 250.0;



double lengt,width,wallarea,ceilingarea;

double wallgals,ceilinggals,wallpergal,ceilingpergal;

double wallcost,ceilingcost;



void main()

{

	dimensions (lengt,width);

	price (wallpergal,ceilingpergal);

	wallfigures (wallarea,wallgals,wallpergal,wallcost);

	ceilingfigures (ceilingarea,ceilinggals,ceilingpergal,ceilingcost);

	display(wallgals,ceilinggals,wallcost,ceilingcost);

	

	cout << "Hit enter to continue ... " << endl;

	getchar();

}



void dimensions (double &l,double &w)

{

	cout << "Enter room length ... ";

	cin >> l;

	cout << endl;

	cout << "Enter room width ... ";

	cin >> w;

	cout << endl;

	return;

}



void price (double &wp,double &cp)

{

	cout << "Price of wall paint ... ";

	cin >> wp;

	cout << endl;

	cout << "Price of ceiling paint ... ";

	cin >> cp;

	cout << endl;

	return;

}



void wallfigures (double &wa,double &wg,double wpg,double &wc)

{

	wa = 2 * (width * HEIGHT) + 2 * (lengt * HEIGHT);

	wg = wa / COVER;

	wc = wg * wallpergal;

	return;

}



void ceilingfigures (double &ca,double &cg,double cpg,double &cc)

{

	ca = width * lengt;

	cg = ca / COVER;

	cc = cg * ceilingpergal;

	return;

}



void display(double wg,double cg,double wc,double cc)

{

	cout << setiosflags(ios::fixed) << setprecision(2);



	cout << "Gallons for wall ... " << wg << endl;

	cout << "Gallons for ceiling ... " << cg << endl;

	cout << endl;

	cout << "Wall cost ... " << wc << endl;

	cout << "Ceiling cost ... " << cc << endl;

	cout << endl;

	cout << "Total cost ... " << wc + cc << endl;

	cout << endl;

	return;

}