example_encapsulation.rb

class Employee
  def initialize name, salary
    @name = name
    @salary = salary
  end
  
  def salary
    return salary
  end
  
  def increase_salary_by increase
    @salary += increase
  end
  
  def decrease_salary_by decrease
    @salary -= decrease
  end
end

employee = Employee.new("Homer", 500)
employee.increase_salary_by 500
print employee.salary