When told to print no more than n bytes, snprintf guarantees that it creates a string of length no more than n-1, with a null terminator at the end of the string.
当被告知输出不超过n个字节时，snprintf保证会创建一个长度不超过n-1的字符串，字符串最后是一个空结束符。
N equals number of bytes requested by the user.
n等于用户请求的字节数。
You can number the bytes in the file from 0 to n, whereas a two-dimensional-type access is possible in Windows.
您可以将文件中的字节从0编到n，而在Windows中则允许进行二维类型的访问。
You can number the bytes in the file from 0 to n, whereas a two-dimensional-type access is possible in Windows.
您可以将文件中的字节从0编到n，而在Windows中则允许进行二维类型的访问。
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