How or where can I get the errata of the Programming in Objective-C 2.0. I bought this book, but it seems that there is no way to get the errata. There are many mistakes in the book. At least I found some: page 342, line 6, the sentence ' In Program 15.7 monthNames...' I think it should read' In Program 15.6 monthNames...' In the same page, "converted to a C string and then displayed with printf " also has a problem. It seems that it did not mention a lot about C string and no longer taught convert NSString to C string as the first edition did. And here the printf function did not appeared at all. page 450, ' In program 19.2' should read ' In program 18.2' page 451, ' [pool drsin]' should read' [pool drain]'