gistfile1.rb

def read_from_user_input
  puts "Please insert a year to see if it's a Leap year: "
  STDOUT.flush
  gets.chomp 
end
 
def validator(a_string)
  if(x=(a_string.scan(/\D/).size==0))
		 puts "numeric"
		 puts a_string
		 exit
	else
	  puts"non-numeric"
	end
 
end
 
def iterator
 validated=case
 when validator(read_from_user_input).nil? then read_from_user_input
 else 
 puts"after while"
 return validator(read_from_user_input).to_i
 end
end
 
iterator