7. test average and grade write a program that asks the user to enter five test scores. the program should display a letter grade for each score and the average test score. write the following methods in the program: calcaverage: this method should accept five test scores as arguments and return the average of the scores. determinegrade: this method should accept a test score as an argument and return a letter grade for the score, based on the following grading scale: score letter grade 90-100 a 80-89 b 70-79 c 60-69 d below 60 f

The code solution is written in Java.

import java.util.Scanner; public class TestScore {    public static void main(String[] args) {        Scanner input = new Scanner(System.in);        System.out.print("Please enter first score: ");        double firstScore = input.nextDouble();        System.out.println("Grade: " + determineGrade(firstScore));        System.out.print("Please enter second score: ");        double secondScore = input.nextDouble();        System.out.println("Grade: " + determineGrade(secondScore));        System.out.print("Please enter third score: ");        double thirdScore = input.nextDouble();        System.out.println("Grade: " + determineGrade(thirdScore));        System.out.print("Please enter fourth score: ");        double fourthScore = input.nextDouble();        System.out.println("Grade: " + determineGrade(fourthScore));        System.out.print("Please enter fifth score: ");        double fifthScore = input.nextDouble();        System.out.println("Grade: " + determineGrade(fifthScore));        System.out.println("Average score: " + calcAverage(firstScore, secondScore, thirdScore, fourthScore, fifthScore));    }    public static double calcAverage(double score1, double score2, double score3, double score4, double score5){        double average = (score1 + score2 + score3 + score4 + score5) / 5;        return average;    }    public static String determineGrade(double score){        if(score >= 90){            return "A";        }        else if(score >= 80 ){            return "B";        }        else if(score >=70){            return "C";        }        else if(score >=60){            return "D";        }        else{            return "F";        }    } }

Explanation:

Firstly, create the method, calcAverage(), that takes five test scores. Within the method, calculate the average and return it as output. (Line 33 - 36)

Next, create another method, determineGrade(), which takes only one score and return the grade based on the range of the  score. (Line 38 -54)

Once the two required methods are created, we are ready to prompt use for input five test scores using Java Scanner class. To use get user input, create a Scanner object (Line 7). Next, use getDouble() method to get an input score and assign it to variables firstScore, secondScore, thirdScore, fourthScore & fifthScore, respectively. Once a score input by user, call determineGrade() method by passing the input score as argument and immediately print out the return grade. (Line  9 - 27)

At last, call calcAverage() method by passing the first test score variables as argument and print out the returned average value. (Line 29).