What does this “label” mean in C++?

Question

I was reading some c++ code, and i saw something interesting.

The code was something like this:

repeat:
    ...code here....
fallback:
    ...code here.         


        

Answer 1

Labels are used with goto and switch/case statements, when they are used to direct the flow of control. However, labels may also be used absent any goto statements (case labels must only appear in a switch statement) as means of identifying particular code segments -- i.e., somewhat like a comment, though in reality more like a title. If you're not seeing any switch or goto statements, I suspect the code author is simply using them to organize his code.