Ace the AP Computer Science Exam for High Schoolers/

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Solution Review: Assign Grades to Students

Solution Review: Assign Grades to Students

Have a look at the solution to the 'Assign Grades to Students' challenge.

We'll cover the following...

Rubric criteria

Solution

Java
class GradingSystem 
{
    public static void main(String args[]) 
    {
        System.out.println(assignGrades(75));
    }
    // Function assigning the grades
    public static char assignGrades(double score) 
    {
        if (score == 100) 
        {
            System.out.println("Superb");
            return 'A';
        }
        else if (score >= 90) 
        {
            System.out.println("Excelent");
            return 'A';
        }
        else if (score >= 80) 
        {
            System.out.println("Very Good");
            return 'B';
        }
        else if (score >= 70) 
        {
            System.out.println("Good");
            return 'C';
        }
        else if (score >= 60) 
        {
            System.out.println("Work Hard");
            return 'D';
        }
        else 
        {
            System.out.println("Fail");
            return 'F';
        }
    }
}

Rubric-wise explanation

Point 1:

Look at line 9. We declare the header of the assignGrades() function: public static char assignGrades(double score). We add the static keyword so that we can directly call this method in the main function without any instance.

Point 2, 3, 4:

  • Look at line 11. We add a condition next to an if keyword. If the score is equal to 100100, then we ...