这个“标签"是什么意思?在C ++中意味着什么? [英] What does this "label" mean in C++?

问题描述

我正在阅读一些C ++代码，并且看到了一些有趣的东西.

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

代码是这样的:

repeat:
    ...code here....
fallback:
    ...code here....
start:
        ....another code....

这是我第一次在c ++代码中看到这种标签"，我称之为标签cos，我在汇编代码中看到了类似的东西，其中代码被分成带有不同标题且以冒号结尾的部分.

This is the first time i am seeing this kind of "labels" in c++ code, i called the labels cos i have seen something similar in assembly code where the code is divided into sections with different titles which end with colon.

我想问你这是什么意思，它有什么用?

I am asking you what does that mean, and of what use it can be ?

推荐答案

它是一个标签，您可以使用 goto 跳转到该标签.

It is a label, to which you can jump using a goto.

在程序中是否应该使用 goto 是完全另一回事.

Whether one should use gotos in a program is another matter entirely.

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