ExamPreparation

package S5_WhileLoops;

import java.util.Scanner;

public class ExamPreparation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int badGradesLimit = Integer.parseInt(scanner.nextLine());

        int badGradesCount = 0;
        String lastProblem = "";
        int tasksCount = 0;
        int gradesSum = 0;

        // read command
        String command = scanner.nextLine();

        while (!command.equals("Enough")) {
            String taskName = command;
            int grade = Integer.parseInt(scanner.nextLine());

            // increment for printing
            gradesSum = gradesSum + grade;
            tasksCount++;
            lastProblem = taskName;

            // check for bad grades
            if(grade <= 4) {
                badGradesCount++;
            }

            // check if we have enough bad grades to stop
            if(badGradesCount == badGradesLimit) {
                break;
            }

            // read command once again
            command = scanner.nextLine();
        }


        // check if we got too many bad grades
        if(badGradesCount == badGradesLimit) {
            System.out.printf("You need a break, %d poor grades.",badGradesCount);
        } else {
            System.out.printf("Average score: %.2f%n", 1.0*gradesSum/tasksCount);
            System.out.printf("Number of problems: %d%n", tasksCount);
            System.out.printf("Last problem: %s", lastProblem);
        }

    }
}