I just want to float to the dining hall after-- " so much easier, so much less painful."

我只想下午时飘去餐厅-,更加容易，更少痛苦“

哈佛公开课 - 幸福课课程节选

As you walk amid the buildings and trees, as you see your friends and classmates, allow these emotions to float through you, freely, lightly.

在你走在建筑物和树木之间时，在你看到朋友和同学时，让那些情绪流遍你的全身，自由地，轻盈地。

哈佛公开课 - 幸福课课程节选

And as you might expect, I'm going to then try and see if I can convert that into a float.

正如你希望的我要试着把他们转化为浮点数,等一等。

麻省理工公开课 - 计算机科学及编程导论课程节选

So what that means is the compiler is actually going to first "cast" so to speak 13 from whatever it is - to a float -- to a floating point value -- and then perform the division for us.

所以这里的意思是编译器将,做“计算“，譬如13这样一个浮点数,-到另一个浮点数-,然后为我们处理除法。

哈佛公开课 - 计算机科学课程节选

Whatever they are, whatever it is that your feeling, allow it to float through you. Naturally.

不论是怎样的情绪，不论感觉到什么，让它流过你的全身，自然地。

哈佛公开课 - 幸福课课程节选

I just want to float to Sanders in the morning.

我只想早上时飘去剧院。

哈佛公开课 - 幸福课课程节选

OK, says it says enter a float. I give it something that can be converted into a float, it says fine. I'm going to go back and run it again though. If I run it again, it says enter a float.

好了，看到他说输入一个浮点数,我输入它可以转换为浮点数的值,那没问题，我回过来再运行一遍,如果我再运行一遍。

麻省理工公开课 - 计算机科学及编程导论课程节选

And that then let's me get to, basically, base this code. Having done that, height I simply call base with get float, I call height with get float, and do the rest of the work.

现在让我们看看这段代码，其实已经写好了，我简单的调用下，用来得到一个浮点数，再调用下，来得到另外一个浮点数，然后做剩下的工作就可以了。

麻省理工公开课 - 计算机科学及编程导论课程节选

I can't rely on the user. I want to make sure I get a float in it, so how do I do that?

我想确保这儿我得到的是一个浮点数,我该怎么做呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, this is not the nicest way to do it but it'll work. I can look at the type of the value of base and compare it to the type of an actual float and see, are they the same?

这不是最好的办法但它确实有用,我可以得到底的值的类型然后,和一个真的浮点数的类型比比,看他们是不是一样？

麻省理工公开课 - 计算机科学及编程导论课程节选

That's going to give me a float.

那将会给我们一个浮点数。

哈佛公开课 - 计算机科学课程节选

So yes, f is a float, but that solution is too late; we need to fix the problem sooner.

是的，f是一个浮点数，但是那个解决方案太迟了;,我们应该在次之前把问题解决。

哈佛公开课 - 计算机科学课程节选

If we did that, if we moved f minus 32 over to the left, that would give me a floating point answer because f is a float.

如果你那样做，如果我们把，放前面，那将会给我们一个浮点数答案,因为f是浮点数。

哈佛公开课 - 计算机科学课程节选

I need to have a float. I need to have another float here, it's giving me some information.

这儿还需要一个,它给了我这样的信息。

麻省理工公开课 - 计算机科学及编程导论课程节选

Need to get the base in. Second thing I want to do, I need to get the height, so I'm going to input a value for the height, also as a float, a floating point.

也就是输入底的值，第二件我想要做的，事情就是得到三角形的高,因此我会输入一个值作为三角形的高，同样也是一个浮点数。

麻省理工公开课 - 计算机科学及编程导论课程节选

If I wanted to get full, real division, I should make one of them a float.

如果我想要得到真正的除法答案，我需要把他们之中的一个,变为浮点数类型。

麻省理工公开课 - 计算机科学及编程导论课程节选

It means anybody using that little function get float doesn't have to worry about what's inside of it. So for example, I decide I want to change the message I print out, I don't have to change the function, I just pass in a different parameter.

这代表着用这个方法去获得浮点数,的任何人都不用担心具体的实现了,例如，如果我想改变下,显示的信息的话，我不必去改变方法，我传个不同的参数就可以了。

麻省理工公开课 - 计算机科学及编程导论课程节选

So if I were to solve this problem, here's the way I would do it. I would say, first thing I want to do, is I want to input a value for the base as a float.

如果我想要解决这个问题，这就是我要解决它的方式了，第一件我要做的事情就是要,输入一个浮点数作为三角形的底。

麻省理工公开课 - 计算机科学及编程导论课程节选

So it turns out there's a solution to this: If you need more precision, more digits after the decimal point than a float allows, what do you go for instead?

所以这里有一个解决方案：,如果你需要比float类型允许的更高精度，小数点后更多位数,那你该用什么取代它？

哈佛公开课 - 计算机科学课程节选

> David: At some point in time, I'm going to have to have declared the variable as a float before I can then hand it to printf as the insertion value for that format strength.

>，大卫：在一个特定的时间，我将需要,声明float类型这样的变量,那样我就可以把它打印出来,像是格式化优点的插入值。

哈佛公开课 - 计算机科学课程节选

I can't rely on Professor Guttag if I give this- if this code to him, I can't rely on him to type in a float. Actually I can, because he's a smart guy, but in general, I can't rely on the user-- I wouldn't do it right to see if you did.

当Guttag使用这段代码的时候-,我不能相信他一定会输入一个浮点数,实际上我能因为他很聪明，但是总体上来讲，别相信用户一定会按照规则来-,我会故意做错来试试你的程序的。

麻省理工公开课 - 计算机科学及编程导论课程节选

I if I go over here, and I say float of three, it's going to do the conversion.

用float来处理3，它将能完成装换，但是如果我吧这个转化为浮点数。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now if you look at that list, there is actually something I didn't seem to check, which is, I said I wanted a float stored in hyp.

看下上面的清单，实际上我还有一些东西忘了检查,也就是说hyp中存储的，应该是浮点数类型。

麻省理工公开课 - 计算机科学及编程导论课程节选

I need to now put this float somewhere, and I'll put it in a variable called f that you can call it whatever you'd like.

我现在需要把这个浮点数放在哪个地方，然后我把它放在,一个叫做f的变量里,你也可以给这个变量取其它的你喜欢的名字。

哈佛公开课 - 计算机科学课程节选