#include <stdio.h>
#define SQFT_PER_GALLON 267

// Function Prototypes

void getMeasurements (int* length, int* width, int* height);
void calcMeasurements(double* squareFootage, double* gallonsOfPaint, int* length, int* width);
int calcSquareFootage(double* squareFootage, int* length, int* width);
double calcGallons(double* squareFootage, double* gallonsOfPaint);
void printOutput(double* squareFootage, double* gallonsOfPaint);

int main () {

    int length, width, height; // These are the measurements of the wall
    double squareFootage, gallonsOfPaint; // Square Footage needed to paint and gallons of paint needed

    getMeasurements(&length, &width, &height);
    calcMeasurements(&squareFootage, &gallonsOfPaint, &length, &width);
    printOutput(&squareFootage, &gallonsOfPaint);

    return 0;
} // end main
/***************************************

 ****************************************/
void getMeasurements (int* length, int* width, int* height)
{
    printf("Enter the length of the room (whole number only): ");
    scanf("%d", length);
    printf("Enter the width of the room (whole number only): ");
    scanf("%d", width);
    printf("Enter the height of the room (whole number only): ");
    scanf("%d", height);

    return;
}
/***************************************

 ****************************************/
void calcMeasurements(double* squareFootage, double* gallonsOfPaint, int* length, int* width)
{
    *squareFootage  = calcSquareFootage(squareFootage, length, width);
    *gallonsOfPaint = calcGallons(squareFootage, gallonsOfPaint);

    return;
}
/***************************************

 ****************************************/
int calcSquareFootage(double* squareFootage, int* length, int* width)
{
    return (*length * *width) * 5;
}
/***************************************

 ****************************************/
double calcGallons(double* squareFootage, double* gallonsOfPaint)
{
    return *squareFootage / SQFT_PER_GALLON;
}
/***************************************

 ****************************************/
void printOutput(double* squareFootage, double* gallonsOfPaint)
{
    printf("Square Footage to paint: %.lf\n", *squareFootage);
    printf("Gallons of paint needed: %.2lf", *gallonsOfPaint);

    return;
}