sscanf(line, "%d %64[^
", &seconds, message);
does %64[^ mean - up to 64 characters? Should it work with GNU C Compiler?
意思是“ 最多读取64个字符, 或在达到新线时停止, 以先到者为准”。 它由标准指定, 所以所有标准图书馆都必须支持它 。
C11 7.21.6.2
[Matches a nonempty sequence of characters from a set of expected characters (the scanset). [...] The conversion specifier includes all subsequent characters in the format string, up to and including the matching right bracket (]).The characters between the brackets (the scanlist) compose the scanset, unless the character after the left bracket is a circumflex (^), in which case the scanset contains all characters that do not appear in the scanlist between the circumflex and the right bracket.
如评论中指出的,为划定扫描列表,可能需要匹配 。 不需要 < strong> An specification 。
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