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We have input/output.
我们学习了输入输出。
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It could be, preconditions I want to have on input It could be, explanations of specific things you're doing.
也可以是我对输入的预期是什么,也可以是，对代码,正在进行的特定操作的解释。
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Now in this case, it's clear that I'm not only saying this function takes an input, I also have to give that input a name.
在这种情况，很清楚的,我不只是说明这个函数有一个输入，我还要给那个输入一个名字。
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If I decide there's a better way to get input, and there is, then I can make it to change what I don't have to change the code that uses the input.
如果我觉得有更好的获取输入的方法，我可以直接改去用这种方式,而不用更改使用了,输入处的代码。
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For a couple of reasons. In some ways, this would be nicer, do expected cases, it's going to tell you on average how much you expect to take, but it tends to be hard to compute, because to compute that, you have to know a distribution on input.
关注最快的情况，在某种意义上来说，因为一些原因这样想挺不错的，当我们处理一个给定的问题,计算平均时间的时候,是很难计算的，因为你并不知道输入的分布情况,这些输入会是怎么样的呢？
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Because if I don't specify a name for this input, I have no way of actually referring to it in subsequent lines of code.
因为如果我不给这个输入定义一个名字，在随后的代码中,我就没有办法使用它。
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You have to pass it as input to another function, as you'll see as possible in problem's Set One specification, but it's ultimately up to you.
你需要把它传给另一个函数当入参，就像你们将,在习题集1中可能看到的，但它最终取决于你。
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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。
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You have to jump through hoops just to ask the user for a piece of input which should be really the thing a language prioritizes.
你要百依百顺才能从用户那里得到一个输入,这个输入可能只是一个,语言优先级。
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OK. So to do this, we're going to have to do a couple of things. All right, the first one is, what do we mean by input size?
好，为了实现这种方法我们,有些事情要做，第一件事情就是，当我们说到输入的大小的时候代表了什么呢？
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I'm going to have it take in as input how many legs I got, how many heads do I have, and I just want to write a little loop.
这就是解决问题的思路,我将要输入我有多少条腿,以及我有多少只头。
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If you want to get some input from the user, my God I don't want to have to program it to low level zero and 1 just to get keys from the keyboard; please let there have been someone who does that for me and indeed there are an increasingly sophisticated options that you can pull off the shelf.
如果你想获得一些用户的输入数据，我的上帝,我可不希望在键盘上敲入0，1的低水平方式来编程;,希望有个人能帮我做这件事吧,但是现有的选择,也变得日益复杂了。
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No, instead we have to click other amount at bottom right there, when we have to input 4-0-0 in this screen 4-0-0 after consulting visually the little cheat sheet on the device itself it tells you in a very long chart how much one pass costs so we multiply and type in 4-0-0, we hit enter.
不，然而我们必须点击,右下边的这个，当我们需要在这个屏幕上,输入0,通过咨询那个设备上小说明,它在一个很长的图表上,告诉你，每一站需要多少钱，我们加起来,输入了4-0-0，点击输入。
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But if it does take input, you have to provide it in the form of arguments or parameters, like print F takes, generally, inside of those parentheses.
但是如果它获得了输入，你需要为它提供相应格式的,参数或参量，像printf的输入，一般地，在这些圆括号里。
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false Initially it's false, because I have no input.
命名为input，OK，初始值为。
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And conceptually, the idea of cubing a value feels like you could package that up into a little box, a little tool that takes input, a value, and returns output the answer A* so you don't have to constantly do A star, A*A So this program ,at the end of today, is pretty much the same thing.
概念上，算一个值的立方就像是,你可以把一个值打包放在一个小盒子里,一个用来接收输入的工具,一个值，然后返回一个答案,所以你并不需要一直使用，等等。，A，star，，A，，and，so，forth。,这个程序，最后，是一个差不多的东西。
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