public class GPA
{
	private double gr1, gr2, gr3;
	private int cr1, cr2, cr3;
	private int total_credit;
	private double total_points;
	private double gpa;
	private char Lgrade;			// a letter grade (A-F)
	private String PFstatus;		// Pass/Fail status

	public GPA()			//default constructor
	{
	}

									//parametrized constructor
	public GPA(double gr1, double gr2, double gr3,
							int cr1, int cr2, int cr3)
	{
		this.gr1 = gr1;		//assign input gr1 to local private variable gr1
		this.gr2 = gr2;
		this.gr3 = gr3;
		this.cr1 = cr1;
		this.cr2 = cr2;
		this.cr3 = cr3;
	}

	public double calcGPA()
	{
		total_credit = cr1 + cr2 + cr3;
		total_points = gr1*cr1 + gr2*cr2 + gr3*cr3;
		gpa = total_points/total_credit;
		return gpa;
	}

	public char Letter()
	{
	         if (gpa >= 3.5 && gpa <= 4.0) {Lgrade = 'A';}
		else if (gpa >= 2.5 && gpa <  3.5) {Lgrade = 'B';}
		else if (gpa >= 1.5 && gpa <  2.5) {Lgrade = 'C';}
		else if (gpa >= 0.6 && gpa <  1.5) {Lgrade = 'D';}
		else if (gpa >= 0.0 && gpa <  0.6) {Lgrade = 'F';}
		return Lgrade;
	}

	public String Status()
	{
		if (gpa >= 2.0) {PFstatus = "PASS!";}
		else  {PFstatus = "Fail...";}
		return PFstatus;
	}
}