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So, it's getting more interesting but we'll soon see that things don't always compile as easily as this command suggests.
更有意思了，但我们很快就会发现,并不是所有的编译都,像这条命令这么简单。
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And the third one I want to point out is, whether this is an interpreted versus a compiled language.
我想说的第三件事情是，这个语言是编译语言,还是解释语言。
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So I just realized this is a new MacBook Pro that I didn't actually download the compiler onto it apparently.
所以，我才意识到这是一台新电脑,显然我并没有把编译器安装到上面。
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> So this time I had the foresight to install this compiler but what I'm gonna do is this.
>，这次我非常有先见之明地,安装了这个编译器，但是我这次要做的却是。
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So really, once we start writing more interesting programs, you would have to type out long annoying commands like that to just compile more sophisticated programs.
实际上，一旦我们开始写一些更复杂的程序时，你们可能要键入那样一些长的，讨厌的命令,来编译跟高级的程序。
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In a compiled language, you have an intermediate step, in which you take the source code, it runs through what's called a checker or a compiler or both, and it creates what's called object code.
而在编译语言里，你就会经过一个中间的步骤，在这种语言里输入源码后，先经过过滤器,或者编译器检查后，它会创建一个叫做目标代码的东西。
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So let me challenge you with this: inside of these curly braces where I have put a comment with slash slash -- a "comment" means nothing here gets compiled, it's just for the human to read.
让我用这个来挑战你们：,在这些花括号里面，我通过双斜杠写入了一个注释,-一条“注释“在这里不会被编译,它只是用来我们阅读的。
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So you're implementing this black box, and if its purpose in life is to actually return a value, you have to tell the compiler what kind of value to expect, and this is going to have ripple effects.
你在实现这个黑盒子，如果它的目的是,返回一个值，你必须告诉编译器你期望的是什么类型的值，这个将是一个连锁反应。
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I'm going to throw it, or raise it, to use the right term to somebody in case they can handle it, but it's a particular kind of exception I might do something like, remind you I have test.
编译器就要抛出他或者提出它,用正确的描述给某个人来处理,但他的确是一种异常,我来做些类似的事情，告诉你我有些测试。
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f2c So I'm going to go ahead and run make on f2c, which is the name I gave to this particular program.
所以我将继续来编译，这是我给这个程序取的名字。
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You can't just take a quoted string back to back with another quoted string so you'd get some kind of compiler error.
你不能让一个引起来的字符串跟另一个引起来的字符串,背靠背,这样编译就会出错。
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My prototype, again, so that I can use it later increment without the compiler wondering what is this increment that you're referring to because it's not otherwise been declared.
我的函数原型，再次强调，我可以以后使用它,这样编译器就不会疑惑这个你提及的,是什么，因为是没有,被声明的。
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In a high-level language, square root might simply be a primitive that you can use rather than you having to go over and code it.
一个高级的语言，平方根可能仅仅,只是你能使用的一个基本要素,而不是你需要去编译它。
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progress2 So let me go ahead and compile progress2 instead and this time run this one.
让我们继续来编译,这次运行这个程序。
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It turns out you can list one, give it a name, and if you use square brackets, that tells the compiler I actually want to put multiple values inside of this -- inside of this variable and how do we do that?
结果是你可以列举一个，给它取个名字，如果你使用方括号，那是告诉编译器,在里面我需要许多的值--在这些变量里,我怎么做到的？
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And let me go ahead and run-- how do I compile this?
继续运行，大家还记得怎么编译吗？
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So, thankfully, C does provide a solution for this, whereby, I can provide a hint, essentially, to the compiler.
幸亏，C为这个提供了一个解决方案，那样，本质上，我可以给编译器一个提示。
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It says you gave me something I didn't know how to deal.
它的意思是你给了编译器一个,他不知道怎么处理的东西。
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In fact, this example would compile because you can use curly braces in this way to encapsulate lines of code, but realize for now, that, not good.
实际上，这个例子可以编译,因为你可以用这种方式来压缩代码行,但是请认识到，那个，不太好。
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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。
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Now if I am difficult with the user positive1 and I compile make positive1, and I then run positive1.
现在如果我和用户有点不和谐,我编译正positive1，然后运行。
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A compiled language is usually much faster in terms of its execution.
编译语言,要比它快一些。
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If you're writing a program and you're testing it and recompiling.
如果你写一个程序,检测，然后重新编译。
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Now as an aside, this may very well compile.
此外，这个可以很好地编译。
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There are no syntax errors so it does compile.
这里没有语法错误，所以它通过编译了。
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Let me go ahead and make, don't do this.
我们继续编译，不要这样做。
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You don't have to re-implement the function.
你不需要重新编译那个函数。
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I just reran make or GCC does it for me, and now I've got all these errors. Well, let's see.
我刚重新运行了make，或者GCC为我编译了代码，现在我得到了这些错误，好的，让我们看看。
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Let me go ahead and compile this.
我们接着编译。
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Let me go ahead and recompile.
让我们继续重新编译。
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