// Page 126 - 127

public class Prog_10_5
{
	public static void main(String[] args)
	{
		double myScore = 78;
		char myGrade;
		myGrade = convertToGrade(myScore);
		System.out.println(myGrade);

	}
	private static char convertToGrade(double score)
	{
	      if( score >= 89.5 )
	           return 'A';
	      else if ( score >= 79.5 )
	           return 'B';
	      else if ( score >= 69.5 )
	           return 'C';
	      else if ( score >= 59.5 )
	           return 'D';
	      else
	           return 'F';
	}
}