~~~ formatter = "%s %s %s %s" puts formatter % [1, 2, 3, 4] puts formatter % ["one", "two", "three", "four"] puts formatter % [true, false, false, true] puts formatter % [formatter, formatter, formatter, formatter] puts formatter % [ "I had this thing.", "That you could type up right.", "But it didn't sing.", "So I said goodnight." ] ~~~ # 你應該看到的結果 * * * * * ~~~ $ ruby ex8.rb 1 2 3 4 one two three four true false false true %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s I had this thing. That you could type up right. But it didn't sing. So I said goodnight. $ ~~~ # 加分習題 * * * * * 1. 自己檢查結果，記錄你犯過的錯誤，并且在下個練習中盡量不犯相同的錯誤。