The return value is always the size of the combined string if no buffer overflow occurred; this makes it really easy to detect an overflow.

如果没有发生缓冲区溢出，返回值始终是组合字符串的长度；这使得检测缓冲区溢出真正变得容易了。

youdao

The return value is always the size of the combined string if no buffer overflow occurred; this makes it really easy to detect an overflow.

如果没有发生缓冲区溢出，返回值始终是组合字符串的长度；这使得检测缓冲区溢出真正变得容易了。

youdao