Clovek

class Clovek
    
    # static field
    @@people_count = 0
    
    # static method
    def self.howmany()
        @@people_count
    end

    # a constructor
    def initialize(name, age)
        @name = name
        @age = age
        
        @@people_count += 1
    end
   
   # getter
    def name
        @name
    end
   
    def age
        @age
    end
   
   # a method
    def whoami()
        puts "Hello, my name is #{@name}, I am #{@age} years old."
    end
end


dan = Clovek.new("Daniel", 31)
dan.whoami()

simon = Clovek.new("Simon", "?")
simon.whoami()

puts "Number of people: #{Clovek.howmany()}"