#include <iostream>
#include <cmath>
#include <iomanip>
 
using namespace std;
 
void instructions();
 
double Paint(double, int);
 
double Labor(int);
 
double Total(double,double);
 
void Output(double, int, double, double);
 
main()
 
{
      int sqft;
 
      double cpg, costlabor, costpaint, totalcost;
 
      cout << showpoint << fixed << setprecision (2);
 
   cout << "what is the square footage of the room? ";
   cin >> sqft;
   do
     {
      cout << "What is the cost per gallon of paint? ";
      cin >> cpg;
 
      if(cpg<10.)
         cout << "Price must be at least $10.\n\n";
 
     }
 
     while(cpg<10);
 
   costpaint=Paint(cpg, sqft);
 
   costlabor=Labor(sqft);     
 
   totalcost=Total(costpaint, costlabor);
 
   Output(totalcost, sqft, costpaint, costlabor);
 
   }
 
 
double Paint(double cpg, int sqft)
 
{
 
         return ceil(sqft/115.)*cpg;  
 
}
 
double Labor(int sqft)
{
       return sqft/115.*(18.00*8);              
}
 
double Total(double paint,double labor)
{
       return paint+labor;
}
 
void Output(double total, int sqft, double paint, double labor)
 
{
     cout << "The number of gallons of paint required is ___\n";
     cout << "The hours of labor required is ___\n";
     cout << "The cost of the paint is $" << paint << endl;
     cout << "The labor charges are $" << labor << endl;
     cout << "The total cost of the paint job is $" << total << endl;
 
    system("pause");
 
    return;
}