For the actual buffer processing, the function is perfectly capable of handling zero-sized buffers by simply returning.

对于实际的缓冲区处理，函数只需直接返回，就能够很好地处理大小为零的缓冲区。

youdao

For the buffer processing, the MFC treats a zero-size data request as a no-op, so I can go ahead and issue requests even if there is no data to read.

对于缓冲区处理，MFC 将大小为零的数据请求当作无操作来对待，所以即使没有数据可读取了，也可以继续发出请求。

youdao

Also, both functions guarantee that the destination will be NUL-terminated as long as the size is at least one (you can't put anything into a zero-length buffer).

此外，只要目标的大小至少为1，两个函数都保证目标将以NUL结尾(您不能将任何内容放入零长度的缓冲区)。

youdao

In general, one useful approach is to pass a length to the 'counted string' function one smaller than the size of the buffer and then explicitly assign zero to the last character in the buffer.

通常，一种有用的方法是，向“计数字符串”函数传递比缓冲区大小小一的长度，然后将零显式赋给缓冲区中的最后一个字符。

youdao

In general, one useful approach is to pass a length to the 'counted string' function one smaller than the size of the buffer and then explicitly assign zero to the last character in the buffer.

通常，一种有用的方法是，向“计数字符串”函数传递比缓冲区大小小一的长度，然后将零显式赋给缓冲区中的最后一个字符。

youdao