BCS 120 - Lab 3

//Lab 3
void lab3()
{
	double gpa, grade;
	string letterGrade;

	cout << "Your grade should be between 0 - 100\n";
	cout << "Please enter your grade:";
	cin >> grade;

	while (grade < 0 || grade > 100)
	{
		cout << "Please enter a valid grade between 0 - 100";
		cin >> grade;
	}

	if (grade >= 93 && grade <= 100)
	{
		letterGrade = "A";
		gpa = 4.0;
	}
	else if (grade >= 90)
	{
		letterGrade = "A-";
		gpa = 3.67;
	}
	else if (grade >= 87)
	{
		letterGrade = "B+";
		gpa = 3.33;
	}
	else if (grade >= 83)
	{
		letterGrade = "B";
		gpa = 3.0;
	}
	else if (grade >= 80)
	{
		letterGrade = "B-";
		gpa = 2.67;
	}
	else if (grade >= 77)
	{
		letterGrade = "C+";
		gpa = 2.33;
	}
	else if (grade >= 73)
	{
		letterGrade = "C";
		gpa = 2.00;
	}
	else if (grade >= 70)
	{
		letterGrade = "C-";
		gpa = 1.67;
	}
	else if (grade >= 67)
	{
		letterGrade = "D+";
		gpa = 1.33;
	}
	else if (grade >= 60)
	{
		letterGrade = "D";
		gpa = 1.00;
	}
	else if (grade < 60)
	{
		letterGrade = "F";
		grade = 0;
	}

	cout << "Your letter grade is a " << letterGrade << " and your gpa is " << gpa << endl;

	if (letterGrade == "A")
	{
		cout << "Good job";
	}
	else if (letterGrade == "F")
	{
		cout << "Need to study";
	}
	else
		cout << "You passed";

	return;
}