multi_condition_if_statement.bal

enum Grade {
    A, B, C, F
}

function calculateGrade(int marks) returns Grade {
    // checks whether the `marks` are greater than or equal to `75`
    if marks >= 75 {
        return A;
    // checks whether the `marks` are less than `75` but greater than or equal to `65`
    } else if marks >= 65 {
        return B;
    // checks whether the `marks` are less than `65` but greater than or equal to `40`
    } else if marks >= 40 {
        return C;
    } else {
        return F;
    }
}