Example ruby exercise

exam.rb

class Exam
    attr_accessor :passes
    attr_accessor :fails
    
    def initialize(students)
        @students = students
        @passes = []
        @fails = []
    end

    def complete
        @students.each do |student|
            student.take_exam(self)
            if student.score < 50
                @fails << student
            else
                @passes << student
            end
        end
    end
    

end


class Student
    attr_reader :score
    attr_reader :name

    def initialize(name)
        @name = name
        
    end

    def take_exam(exam)
        @score = rand() * 100
    end

    def to_s
        "#{@name}"
    end
end

students = [
    Student.new("Whoever"),
    Student.new("Nobody"),
    Student.new("grant"),
    Student.new("murat"),
]

exam = Exam.new(students)

exam.complete()

puts "Passes: #{exam.passes.join(', ')}"
puts "Fails: #{exam.fails.join(', ')}"