make a chessboard

chessboard

def chess_board(size = 8)
  i = 0
  j = 0
  while i < (size * size)
      if i % (size) == 0
        puts ""
        j % 2 == 0 ? print("# " * (size / 2)) : print(" #" * (size / 2))  
        j += 1
      end
    i += 1
  end
end

puts chess_board(8)

# # # #
 # # # #
# # # #
 # # # #
# # # #
 # # # #
# # # #
 # # # #