First, is the while loop.

首先是 while 循环。

youdao

The key part of that is that WHILE loop.

关键的部分是这个while循环。

youdao

Listing 7. Pseudocode for the while loop.

清单7 . while循环的伪代码。

youdao

The difference with the do while loop, as the syntax kind of suggests, is that this construct is going to do something no matter what.

作为建议的语法，do，while循环的不同之处,是这个结构不管怎么样,它会做一些事情。

哈佛公开课 - 计算机科学课程节选

At the end of the day, you can implement the exact same program using a while loop that you can using a for loop, it's just your code is going to look slightly different.

最终，你可以执行这个程序,再使用for循环的地方使用while循环，这只是使你的代码看起来稍微有点不同。

哈佛公开课 - 计算机科学课程节选

Ah ha, it goes into that accept portion, prints out a message, and goes back around the while loop to say try again. And it's going to keep doing this until I give it something that does serve as a float.

他会说输入一个浮点数，啊哈，它就到了那段处理代码,打印出消息,然后回到while循环让我们再输一次,它会持续这么做直到它接受到一个浮点数。

麻省理工公开课 - 计算机科学及编程导论课程节选

We found a very good balance where we could keep users in the loop while still focusing our time on the software creation.

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