9 嘗試%%。你必須逃避它,因爲它是一個格式說明符符號。 來源 2012-06-24 00:13:54 DrummerB +5 欲瞭解更多參考:[NSString格式說明符](https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html) – sosborn
欲瞭解更多參考:[NSString格式說明符](https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html) – sosborn