Notice what it says. I'm going to pass in 1 a string, call it s, binds it locally, and it says the following.

然后看接下来的内容,接下来说的是如果这个字符串的长度等于，那么我就成功了。

麻省理工公开课 - 计算机科学及编程导论课程节选

- And because I'm writing out a string that's the same length -- -- my strings aren't getting shorter -- it's creating this illusion of some animation.

因为我写了一个长度相同的字符串-,我的字符串不会变的更短-,它生成一个动画幻觉。

哈佛公开课 - 计算机科学课程节选

b OK. In this example I'd use b. All right, as b get-- b is the thing that's changing as I go along here, but it could be things like, how many elements are there in a list if the input is a list, could be how many digits are there in a string if the input's a string, it could be the size of the integer as we go along. All right.?

好，在这个例子里我会用，因为b是一直在变的东西,但是也可能是如下情况：,如果输入是数组的话,变化的就是数组的元素数，如果输入是字符串的话,变化的就是字符串的长度，如果是integer的话,可能就是这个数的大小，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

First, I'm going to do a sanity check strlen so we've used string length, strlen, before.

首先，我先做一个检查,我们以前使用过字符串长度函数。

哈佛公开课 - 计算机科学课程节选

Even though there's four bytes the length of the string is consistent with what a human being would interpret as the length 3 of the string which is 3.

即使那里有4个字节,字符串的长度,与我们所认为的长度是一致的,字符串的长度是。

哈佛公开课 - 计算机科学课程节选

Is the strength length greater than two or greater than zero?

字符串长度大于2或者大于0么？

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N So, I'm initializing a variable called N to the string length of s1.

我初始化一个变量,等于s1的字符串长度。

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I certainly don't want to assume they're always going to type a three-letter or a four-letter or a two-letter word I want some dynamism but that's fine because get string can get a string of any length, I can then use the string length function to just ask while the program is running how big is the string that I was handed?

当然我不能假设他总是,输入3个字符或4个字符,或2个字符的单词，我想要动态地分配,因为GetString可以获得任意长度的字符串，然后我可以使用strlen函数,来得到那个我传递的字符串,有多长？

哈佛公开课 - 计算机科学课程节选

So strlen is the length of a string.

所以strlen就是字符串的长度。

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Well, this question mark becomes an O, this question mark becomes an O, and then the loop terminates 0 1 2 because it's iterating from zero to N so that's zero, 1, 2 and the length of the string is 3 so the loop terminates, but I remember that I needed to have this special sentinel value so I'm just going to put it there manually.

嗯，这个问号变成了，这个问号变成了0，然后循环结束了,以为迭代从0到N，那就是，字符串的长度是3，然后循环就结束了，但是我记得我需要这个特殊的标记值,所以需要手动的加上它。

哈佛公开课 - 计算机科学课程节选