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It says, if answer, sorry, imagine x is -16, ANS is 0 is less than -16, no. So what does it do?
对不对？让我们来看看，如果答案，对不起0,如果x是-16的话，ANS为0，小于-16吧，对？
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Back around to the test. What's ANS squared?
是的，那么下一步做什么呢？
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Just to remind you what it does, we bound x to some value, we set up an initial variable called ANS or answer, answer and then we run through a little loop.
记住你要做些什么，我们给x赋一个值,我们建立一个初始变量，命名为ANS或者。
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And I've got to worry about, is somebody else using ANS, answer, as a variable, in which case I've got to be really careful. Is somebody else using x as a variable? I've got to deal with a lot of those details.
而且我还要担心有没有别人,使用了ANS，answer作为变量,这样我就必须要非常小心,有没有别人用x当做变量呢？,我需要处理很多类似的细节。
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So now, in this case, this code is going to, when we get here, check, and if you haven't seen that strange thing there, that exclamation point in bang computer-ese called a bang, it says x if ANS star ANS is not equal to x, all right?
那么现在，在这个例子中，当我们执行到这里，代码会去检查,如果你没有看到过这个奇怪的东西,这个感叹号在计算机学中被叫做,代码的意思是如果ANS的平方不等于？
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I can either look at my flow chart, or I can look at the code. If I look at the flow chart, it says, I'm at this point. Look at ANS squared. Is it less than or equal to-- sorry, first of all, 0 ANS squared is 0, is it less than or equal to x, yes.
我可以看流程图也可以看我的代码,如果我看流程图的话，流程图这么说的，在这一点，看看ANS的平方,看是不是小于等于-对不起，首先，ANS的平方是。
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But that table does not affect any bindings for other instances of the variable like x for ANS.
这时这个局部表就消失了,这个局部表将不会影响其它赋值,比方说像ANS对应的x变量。
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What do I have here? I need the variable, ANS, ANS I need x, and I need ANS times ANS, ANS times ANS. Right. Those are the three things that are involved in this computation.
因此让我先用这个方法做吧，我这里需要什么呢？我需要变量，还需要x，然后将ANS乘以ANS，对,在这个计算中涉及到了三件事情。
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Remember last time, we wrote this simple piece of code to print out even or odd. If, you know, x, 1 it was in fact, even or odd. So let me show you what a flow chart for that would look like, because I want to make a comparison point here.
这就像这里有一些脚蹼一样,首先进行测试，然后把球这样放来让ANS加,然后回来继续测试，最终跳出循环然后打印答案。
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So answer, or ANS, is also bound only locally.
所以answer，或者ANS，也是局部变量的。
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So what do I do? Change ANS. X doesn't change.
那么它是不是小于等于x呢？
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5 Right. Sure. Square root of 16 is 5.
是的，那么ANS为5，AND的平方等于。
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Now, the one that we're most interested in ANS is the one where, in fact, it gets out ANS, so you see down here in the code, there's a spot where it's going to return the value of ANS, which is what we want, right? That's the thing that holds the value that we intended to have.
现在我们最感兴趣的是这个,事实上它返回的是，所以你看这段代码,在这里返回ANS值,也就是我们想要的,对吧？,它就承载了我们想得到的值。
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X stays the same. 4 squared is 16.
我没把x赋值为500？好，ANS为。
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It's 1. Is it less than or equal to 16? Sure.
改变ANS，x不变，再去执行测试。
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I test an end test. So the flow chart says, and the tradition was to do this in a diamond shape, I'm going to check if ANS times ANS-- oh, which way did I want to do this x - is less than or equal to x. Now that's a test.
首先进行终结测试，因此流程图就的去,传统的做法是把这个放到一个菱形里面,检查下是否ANS乘以ANS-哦,我刚才是怎么说的来着-是不是小于等于。
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