So it turns out that, main, yes, is the default function you write, at least in C, when writing a program.

结果是，main函数，是的，这是你写的默认函数，至少是在C语言中，当写程序的时候。

哈佛公开课 - 计算机科学课程节选

I'm going to open up a program called positive1.c. I'm going to scroll down to the juicy part here.

我将要打开一个叫做positive1，c的程序,我们翻到这个有趣的部分。

哈佛公开课 - 计算机科学课程节选

So I'm gonna go ahead and save this file, hello c it's hello.c, dot C hints at the fact that this program I just whipped up is written in a language called C.

所以我打算继续，保存，并命名为，“，c“表明这个程序,是使用C语言写的。

哈佛公开课 - 计算机科学课程节选

I am going to run a program called Nano nano hello c and type nano hello.c and I'm gonna type the following very quickly without much explanation because we'll dive into this more next week.

我要运行一个Nano程序,键入,我快速写下下面的内容,不打算做过多的解释,因为下周我们会深入了解这些。

哈佛公开课 - 计算机科学课程节选

But once you've written a program, "hello world," in a file called hello.c, you Save and Quit.

不过一旦你们写了一个“hello，world“程序“,并且把它保存为hello，c文件后退出。

哈佛公开课 - 计算机科学课程节选

This is a file called Holloway.c. This is-- to be clear, not a program.

这里有一个文件Holloway，c，不是程序-,我们马上就要清除掉它。

哈佛公开课 - 计算机科学课程节选

So it turns out a really nice shortcut on most systems, oops, is to say if you have a file called hello.c and you wanna turn it into a program called hello, well, make hello just write in the command makeHello and it will do all of that for you automatically and hand you a program called hello.

就是寻找一种能在大多数系统上运行的更快捷的方式，哇！,也就是说，你有一个hello，c的文件,你想把它变成一个名为hello的程序，那么只需要敲入命令,它就会自动为你生成,一个hello程序。

哈佛公开课 - 计算机科学课程节选

Well it's a stupid looking program, but because I had more new line characters, and because I was using percent C, for individual characters, one per line, now I'm seeing dot slash ARG V2, well, now if I go ahead and rerun this with foo, I get this effect as well.

这是一个看起来很笨的程序，但是因为我有更多的新行代码，因为我使用的是%c，为单个字符使用的，每一行一个，现在我看到的是，/argv2，好的，现在如果我继续用foo返回它，我产生了这样的效果。

哈佛公开课 - 计算机科学课程节选