"Some of our projects have looked at what we call situational impairments, which are challenges to accessibility that are caused more by the situation or context that the computer user is in instead of maybe as we usually think of accessibility as having to do with someone's own physical or cognitive state."

VOA: special.2011.04.18

If you instead use GetString, same thing: blinking cursor, the function is just going to wait for the user to type a word, a sentence or whatever, and then hit Enter.

如果你用GetSring来代替它，同样的：闪烁光标，那个函数只是等待用户来,输入一个单词，一个句子什么的，然后敲回车。

哈佛公开课 - 计算机科学课程节选

So let's go ahead and introduce a couple other capabilities so that we can finally start writing programs that maybe print out charts or interact with the user, play games, or the like.

让我们继续来介绍其他几个功能,以便我们最终能开始写程序,那样可以打印图表或与用户交互，打游戏之类的。

哈佛公开课 - 计算机科学课程节选

How likely are all the inputs, are they all equally likely, or are they going to depend on other things? And that may depend on the user, so you can't kind of get at that.

他们大致相同么？,他们依赖于其他事情么？,输入也跟用户有关,因此你没法完全得出结果来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Anything that tells him to sense something like the user's mouse or the edge of his screen is actually purple in color; and so they're nicely colorized and all this but the one that's adventurous right now is this.

能够让计算机感知鼠标或屏幕边缘的图块,都是紫色的;,这些图块五颜六色,但这里有一个不太靠谱的按键。

哈佛公开课 - 计算机科学课程节选

When you've been typing in words to the keyboard like your name or any word that you're trying to provide to the user, a string really looks like this.

当你们通过键盘键入单词，比如你的名字,或者你想提供给用户的任何单词，一个字符串实际上看起来就是这样。

哈佛公开课 - 计算机科学课程节选

We look at what emails you reply to if you reply in theory that suggests this user must care about whoever sent this email or the topic they are in.

我们看看哪些邮件要回复,如果你回复了,理论上来说这表明了用户一定很关心,发件人以及邮件的主题。

哈佛公开课 - 计算机科学课程节选

Notice in this program I have not checked whether or not the user actually provided input.

就拿这个程序说事吧，我们根本没有检查,用户到底有没有输入。

哈佛公开课 - 计算机科学课程节选

Let's assume that the user typed in a pretty short word we didn't run out of memory or anything crazy so here's the new feature.

假设用户输入,很短的单词，没有出现超出内存之类的问题,这里是新的特点。

哈佛公开课 - 计算机科学课程节选

Even those of you who've taken AP computer science or something similar perhaps recall that even just getting a piece of input from the user is ridiculously not obvious.

你们中上了AP计算机科学这门课,或者类似的课程的人可能还记得,即使只是从用户那里得到一个输入,也相当麻烦。

哈佛公开课 - 计算机科学课程节选

And we'll see if you try to mess with our functions by providing a string when we want an int, or providing an int when we want a string, you may very well get yelled at and the user will have to retry.

我们可以看到，如果你尝试打乱我们的函数,当想要一个int数时我们提供sting型，或者,当想要一个sting数时我们提供int型，你可能会被吼叫,然后用户不得不重新尝试。

哈佛公开课 - 计算机科学课程节选

So actually thinking about how humans interact with machines and how you can optimize your so called user interface or GUI interface is also one of the themes in this particular field.

因此考虑人与机器如何交互动,以及如何优化所谓的用户界面,或者GUI界面就是这个特殊领域的一个主题。

哈佛公开课 - 计算机科学课程节选

So the take away is that if the user actually gives me two or three or four or whatever, this is this expression "is n less than 1" is going to evaluate to false if it's actually two or three or four or whatever.

所以先不管用户实际上给我,3，4还是其他数，这个表达式,“是否n小于1“将被评估为错误的,如果输入额是2，3，4或其它的数。

哈佛公开课 - 计算机科学课程节选

I probably whip out a do while loop very rarely, but very often when programming games or any program that takes user input and has to check that user input and yell at the user if they're messing with you or aren't providing what's expected.

我可能很少用do，while，循环，但常常是,当编制程序游戏或需要用户输入的程序是,需要检查用户的输入并提醒用户,如果他们干扰了你,或没有提供所期望的输入。

哈佛公开课 - 计算机科学课程节选

So we'll talk a bit more about this idea of functions today, but, get int, again, can think of it as a black box, whose purpose in life is to prompt the human for input and pester the human if he or she doesn't actually give it int, but then once it has that, has entered it from the user, it's quote unquote, returns it to you.

所以我们进今天将多讨论点这个函数的概念，但是，GetInt，我们可以把它当做一个黑盒子，它的唯一目的是提示人们来输入,并且如果他或她没有,给它int数，则会纠缠用户，但是一旦它得到了，用户输入的int数，对输入进行引用，返回给你。

哈佛公开课 - 计算机科学课程节选

I'm going to use the CS50 Library instead for user input I'm saying say something then I'd get a string from the user and I call time s1 and then I say, say something, s2 and then I get another string from the user and call it s2 and apparently this program's purpose in life is to tell me yes or no the user said the same thing both times.

然而我使用的是CS50库来获得用户输入,我说点什么，然后从用户那里获得一个字符串,并把它叫做s1，然后我说点什么，然后从用户那里获得一个字符串，并把它叫做2,这个程序的最终目的是,告诉我两次用户输入的是不是同样的东西。

哈佛公开课 - 计算机科学课程节选

-- Else if n is greater than 4 and n is less than 6 -- 7 let's call it medium -- else if n is greater than or equal to 7, -- less than or equal to 10 -- let's call it "big" -- and if the user typed in zero or negative 10 or 20 or whatever, let's just use the all-inclusive else block and just say, "You picked an invalid number."

否则如果n大于4，并且n小于-,我们叫它为中间数--否则如果n大于等于，小于等于10--我们叫它为“大数“,如果用户键入了0或者-10或20或其它的，让我们用一个广泛的else子句，只需要说，“你选了一个非法的数字“

哈佛公开课 - 计算机科学课程节选