Day2 Conditional Statements (If-Else)

Objective

In this challenge, we learn about if-else statements. Check out the attached tutorial for more details.

Task

Complete the getGrade(score) function in the editor. It has one parameter: an integer, score, denoting the number of points Julia earned on an exam. It must return the letter corresponding to her grade according to the following rules:

• If (25 < score <= 30), then grade = A.
• If (20 < score <= 25), then grade = B.
• If (15 < score <= 20), then grade = C.
• If (10 < score <= 15), then grade = D.
• If (5 < score <= 10), then grade = E.
• If (0 < score <= 5), then grade = F.

Input Format

Stub code in the editor reads a single integer denoting score from stdin and passes it to the function.

Constraints

• 0 <= score <= 30

Output Format

The function must return the value of grade (i.e., the letter grade) that Julia earned on the exam.

Sample Input 0

1

11

Sample Output 0

1

D

Explanation

Because score = 11, it satisfies the condition (10 < score <= 15) (which corresponds to D). Thus, we return D as our answer.

Solution1

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function getGrade(score) {
    let grade;

    if (score <= 5) {
        return 'F';
    } else if (score <= 10) {
        return 'E';
    } else if (score <= 15) {
        return 'D';
    } else if (score <= 20) {
        return 'C';
    } else if (score <= 25) {
        return 'B';
    } else {
        return 'A';
    }

    return grade;
}

Solution2

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function getGrade(score) {
    let grade;
    // Write your code here
    grade = score <= 5 ? 'F'
        : score <= 10 ? 'E'
            : score <= 15 ? 'D'
                : score <= 20 ? 'C'
                    : score <= 25 ? 'B'
                        : score <= 30 ? 'A' : '';

    return grade;
}