//	CS112	Computer Programming Assignment 4(ii)
//
//	File: hw4b.cpp
//	Author: Katie Buck
//	Instructor: Dr. Wang
//
//	Compile: g++ hw4b.cpp
//	Run: ./a.out
//
//	Goal: The goal of this program is to use a loop to read
//	 a score and output its letter grade.
//

#include <iostream>

using namespace std;

int main()
{
	char letter;
	float grade;

	cout << "Do you want to run the program? (y=yes, q=quit) : ";
	cin >> letter;

	while(letter != 'q')
	{
	cout << "What is your grade? ";
        cin >> grade;
	
	if ( grade >= 89.5 )
		cout << "A.\n";
	else if ( grade >= 79.5 )
		cout << "B.\n";
	else if ( grade >= 69.5 )
		cout << "C.\n";
	else if ( grade >= 59.5 )
		cout << "D.\n";
	else
		cout << "F.\n";

	
	cout << "Do you want to run? (y=yes, q=quit): ";
	cin >> letter;
}		
	return 0;
}