Question

6.27 Ch 2 Program: Painting a wall (C++)
(4)Calculate the cost of the paint. Paint comes in six colors (Red, Yellow, Green, Blue, Black,White) Assign numbers 0-5 to these paint colors ie Red =0 and White =5. The costs for each of these paints is as follows:(2 pts) Now your program will be submission ready.

Main.cpp

#include <iostream>
#include <cmath>
using namespace std;
#include "paint.h"

int main() {
   double wallHeight;
   double wallWidth;
   double wallArea;
   double gallonsPaintNeeded;
   int cansNeeded,colorNum;
   Color paintColor;
   double costArray[numOfColors];

   cout << "Enter wall height (feet): "<<endl;
   cin >> wallHeight;
   cout << "Enter wall width (feet): "<<endl;
   cin >> wallWidth;
   cout<< "Enter paint color as an integer"<<endl;
   cout<<"Red   - Enter 0"<<endl;
   cout<<"Blue - Enter 1"<<endl;
   cout<<"Green - Enter 2"<<endl;
   cout<<"Yellow- Enter 3"<<endl;
   cout<<"Black - Enter 4"<<endl;
   cout<<"White - Enter 5"<<endl;
   cout<<"Your color ?"<<endl;
   cin>>colorNum;
   paintColor= (Color)colorNum; // cast the integer to type Color

// Calculate and output wall area
// FIXME (1): Calculate the wall's area
   cout << "Wall area: " << wallArea << " square feet" << endl;   // FIXME (1): Finish the output statement


   // FIXME (2): Calculate and output the amount of paint in gallons needed to paint the wall

   cout << "Paint needed: " << gallonsPaintNeeded << " gallons" << endl;

   // FIXME (3): Calculate and output the number of 1 gallon cans needed to paint the wall, rounded up to nearest integer

   cout << "Cans needed: " << cansNeeded <<" can(s)" << endl;
   //FIX ME (3) populate the cost Array and calculate the total cost of the paint

cout << "TotalCost: $" << totalCost<<" for "<<cansNeeded;
switch (paintColor){
case Red: cout<<" Red";
break;
case Blue: cout<<" Blue";
break;
case Green: cout<<" Green";
break;
case Yellow: cout<<" Yellow";
break;
case Black: cout<<" Black";
break;
case White: cout<<" White";
break;
}
cout<<" can(s)" << endl;
   return 0;
}

paint.h

#include<fstream>
const double squareFeetPerGallons = 350.0;
const double gallonsPerCan        = 1.0;
const int numOfColors =6;
enum Color {Red, Blue, Green, Yellow, Black,White};
double calculateWallArea(double height, double width){
// height times width
}
double calculatePaintAmount(double wallArea){
//wallarea divided by square feet per gallons
}
int calculateNumberOfCans(double paintAmount){
return ceil(paintAmount/gallonsPerCan); // round up the number of cans needed
}
void getColorCost(double costArray[]){
//open the data file and read into array
}
double calculateCost(Color paintColor, double costArray[],double numOfCans ){
// the cost of paint given the color and number of cans
}

cost.txt
1.99
2.99
0.99
2.99
0.49
0.99

Answer 1

// paint.h

#include<fstream>

#include <cmath>

using namespace std;

const double squareFeetPerGallons = 350.0;

const double gallonsPerCan        = 1.0;

const int numOfColors =6;

enum Color {Red, Blue, Green, Yellow, Black,White};

double calculateWallArea(double height, double width){

       return(height*width);

}

double calculatePaintAmount(double wallArea){

       return(wallArea/squareFeetPerGallons);

}

int calculateNumberOfCans(double paintAmount){

return ceil(paintAmount/gallonsPerCan); // round up the number of cans needed

}

void getColorCost(double costArray[]){

       ifstream fin("cost.txt"); // provide the full path to file

       if(fin.is_open())

       {

             int i=0;

             while((!fin.eof()) && (i < numOfColors))

             {

                    fin>>costArray[i];

                    i++;

             }

             fin.close();

       }else

       {

             for(int i=0;i<numOfColors;i++)

             {

                    costArray[i] = 0;

             }

       }

}

double calculateCost(Color paintColor, double costArray[],double numOfCans ){

// the cost of paint given the color and number of cans

       switch(paintColor)

       {

       case Red:

             return(numOfCans*costArray[0]);

             break;

       case Blue:

             return(numOfCans*costArray[1]);

             break;

       case Green:

             return(numOfCans*costArray[2]);

             break;

       case Yellow:

             return(numOfCans*costArray[3]);

             break;

       case Black:

             return(numOfCans*costArray[4]);

             break;

       case White:

             return(numOfCans*costArray[5]);

             break;

       default:

             return(0);

             break;

       }

}

//end of paint.h

// main.cpp : C++ program to calculate the cost of painting a wall

#include <iostream>

#include <cmath>

using namespace std;

#include "paint.h"

int main() {

   double wallHeight;

   double wallWidth;

   double wallArea;

   double gallonsPaintNeeded, totalCost;

   int cansNeeded,colorNum;

   Color paintColor;

   double costArray[numOfColors];

   cout << "Enter wall height (feet): "<<endl;

   cin >> wallHeight;

   cout << "Enter wall width (feet): "<<endl;

   cin >> wallWidth;

   cout<< "Enter paint color as an integer"<<endl;

   cout<<"Red   - Enter 0"<<endl;

   cout<<"Blue - Enter 1"<<endl;

   cout<<"Green - Enter 2"<<endl;

   cout<<"Yellow- Enter 3"<<endl;

   cout<<"Black - Enter 4"<<endl;

   cout<<"White - Enter 5"<<endl;

   cout<<"Your color ?"<<endl;

   cin>>colorNum;

   paintColor= (Color)colorNum; // cast the integer to type Color

   // Calculate and output wall area

   wallArea = calculateWallArea(wallHeight,wallWidth);

   cout << "Wall area: " << wallArea << " square feet" << endl;   // FIXME (1): Finish the output statement

   // Calculate and output the amount of paint in gallons needed to paint the wall

   gallonsPaintNeeded = calculatePaintAmount(wallArea);

   cout << "Paint needed: " << gallonsPaintNeeded << " gallons" << endl;

   // Calculate and output the number of 1 gallon cans needed to paint the wall, rounded up to nearest integer

   cansNeeded = calculateNumberOfCans(gallonsPaintNeeded);

   cout << "Cans needed: " << cansNeeded <<" can(s)" << endl;

   // populate the cost Array and calculate the total cost of the paint

   getColorCost(costArray);

   totalCost = calculateCost(paintColor,costArray,cansNeeded);

   cout << "TotalCost: $" << totalCost<<" for "<<cansNeeded;

   switch (paintColor){

             case Red: cout<<" Red";

                    break;

             case Blue: cout<<" Blue";

                    break;

             case Green: cout<<" Green";

                    break;

             case Yellow: cout<<" Yellow";

                    break;

             case Black: cout<<" Black";

                    break;

             case White: cout<<" White";

                    break;

       }

   cout<<" can(s)" << endl;

   return 0;

}

//end of program

Output: