#include <iostream>
#include <iomanip>
using namespace std;

// ----- Main Function -----

int main()
{

// ----- Variables -----
          
int 
	grade,    // Type of Gas
	gallonsint,  // Gallons    
	R,        // Regular
    	P,        // Premium
    	S,        // Supremium
	washcost; // The Price for a Car Wash

	gallonsint = gallons;
	gallonsint = static_cast<int>(gallons);

   R = 3.399;     // Regular Gas Prices Per Gallon
   P = 3.539;     // Premium Gas Prices Per Gallon
   S = 3.679;     // Supremium Gas Prices Per Gallon

float
	gallons;    // Number of Gallons Purchased
	discpts;    // Discount Points for Each Grade

char
	totalcost;   // Total Cost for Gasoline and the Wash

// ----- Input Values (Number of gallons) -----

cout << endl;
cout << "\n\n~~~~~ Welcome to the Gasoline and Wash Discount Calculator! 
~~~~~\n\n";
cout << endl;

cout << "Enter number of gallons purchased";
cin >> gallons >> gallonsint;
cout << endl;

cout << "Enter Grade of Gasoline (R for Regular, P for Premium, or S for 
Supremium";
cin << grade;
cout << endl;


cout << "Enter Total Cost of Gas ;
cin >> totalcost;
cout << endl;


// ----- Calculations -----

  if ( gallonsint == 'R' || gallonsint == 'r' && gallonsint <= 15 );
        totalcost = ( 3.399 * static_cast<int>(gallons) )* .60;
       	 discpts = 3 * static_cast<int>(gallons);
			cout << discpts << totalcost;
	      else ( gallonsint == 'R' || gallonsint == 'r' && gallonsint 
>= 15 );
		     totalcost = 3.399 * static_cast<int>(gallons);
	   	     discpts = 4 * static_cast<int>(gallons); 
			cout << discpts << totalcost;
			cout << "~~~Free Car Wash!~~~";
    

     if ( gallonsint == 'P' || gallonsint == 'p' && gallonsint <= 15 );
	totalcost = ( 3.539 * static_cast<int>(gallons) ) * .60;
	discpts = 4 * static_cast<int>(gallons);
		cout << discpts << totalcost;
	
	     else ( gallonsint == 'P' || gallonsint == 'p' && gallonsint 
>= 15 );
	 	     totalcost = 3.539 * static_cast<int>(gallons);
		discpts = 4 * static_cast<int>(gallons);	
		cout << discpts << totalcost;
		cout << "~~~Free Car Wash!~~~";
    
         if ( gallonsint == 'S' || gallonsint == 's' && gallonsint <= 15 
);
	    totalcost  = ( 3.679 * static_cast<int>(gallons) ) * .60;
 	    discpts = 5 * static_cast<int>(gallons);
			cout << discpts << totalcost;
		else ( gallonsint == 'S' || gallonsint == 's' && 
gallonsint >= 15);
		     totalcost  = 3.679 * static_cast<int>(gallons);
		     discpts = 5 * static_cast<int>(gallons);
			cout << discpts << totalcost;
			cout << "~~~Free Car Wash!~~~";
 	

return 0;
}