GradingSummary.java

import java.util.Scanner;

public class GradingSummary {
    public static void main(String[] args){

        Scanner input = new Scanner(System.in);

        int [] gradeCount = new int[10]; // index 1-9 used
        int count = 1;

        while (count <= 5){
            System.out.print("Enter score for student "+count+": ");
            int score = input.nextInt();
            int grade = 0;

            if(score >= 80 && score <= 100) grade = 1;
            else if (score >= 75) grade = 2;
            else if (score >= 66) grade = 3;
            else if (score >= 60) grade = 4;
            else if (score >= 50) grade = 5;
            else if (score >= 45) grade = 6;
            else if (score >= 35) grade = 7;
            else if (score >= 30) grade = 8;
            else grade = 9;

            gradeCount[grade]++;
            count++;
        }

        System.out.println("\n ------Grade Summary -------");
        for(int i = 1; i <= 9; i++){
            System.out.println("Grade "+i+": "+gradeCount[i]+" student(s).");
        }

        input.close();

    }
}