So we can see this in progress3.c. This is the exact same program that I had in progress2.c. It's the fancier version that's actually using backslash r to move things to the start of the line.

所以我们可以看到这个,在progress3，c中，这个一个和progress2，c完全相同的程序,这是一个爱好者版本，它用,反斜杠r来把代码移动到行的开始。

youdao