Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Contradicted ANSI C Standard.

The American National Standards Institute sellsISO 9899:1990 (the C language standard) for around$130. Schildt's annotated version sells for about$30-40. The price difference reflects the valueof the annotations.At no time do the annotations clarify, enhance,or supplement the standard. The difficult orobscure points are often ignored; occasionally,"clarifying" text is added which flatlycontradicts the meaning of the text.To comprehend how bad this really is, understand that 9899:1990 is the Standard; 9899-1990, as the book refers to it, would refer to the one thousand, nine hundred and ninetieth revision of that standard. Truly, incompetent from cover to cover, even including the spine.The redeeming feature? Despite (in at least oneedition) a missing page of the standard, a fewmissing punctuation marks, and a few other botches, this does contain the text of thestandard as it stood in 1990.