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>> SPEAKER 1: Let's write the
first of our programs.

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We'll use a program called gedit, which
is simply a graphical editor.

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Not unlike Microsoft Word, with which
we can create source code.

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Let's first create ourselves
a file called Hello.c.

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>> I'm going to go up to File, Save.

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Type of file name of Hello.c.

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Specify that I want to save it
in jHarvard's home directory.

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And then click Save.

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Now the tab atop my file indeed
confirms the files Hello.c.

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So we're on our way.

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>> Let's go ahead and write
our first program.

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Sharp, include, open bracket, standard
I/O.h, close bracket.

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Int, main, void, open curly brace, four
spaces of indentation, printf,

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open parenthesis, open quote, hello
comma world, backslash n, close quote.

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Close parenthesis.

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Semicolon, enter, backspace, backspace,
backspace, backspace, and a

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closing curly brace.

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>> Not the simplest looking program but
if you look closely at line five,

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that's really the essence
of this program.

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Once we run this program through a
compiler, thereby getting ourselves

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some zeros and ones that the computer
itself will understand, we will have a

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program that quite simply prints
to the screen, hello world.

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Let's now hit Save.

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>> And now let's compile this
program and run it.

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To do so, we're going to use this black
and white window at the bottom

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of my screen, otherwise known
as a terminal window.

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And I'm literally going to type make
hello to make a program called hello.

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And this program make is actually going
to infer from that command that

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the file must be called hello.c.

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>> I now hit enter.

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I see a seemingly cryptic set of
commands on the screen, but more on

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those another time.

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But most importantly, I see
another blinking prompt.

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At this point, I can type
.slash hello, enter.

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And there it is, my very first
program, hello world.

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