The buffer size argument includes the space for the terminating null character. 缓冲区的大小参数包括这个null结束字符的空间。
Writeis also available, but rather than terminating on a null character, it writes the requested number of bytes to the file. 还是有效的,但不是以空终止符结尾,而是它向文件写入需要的字节数。