Unix/Linux:
==========

hercules[1]% toymem in1.txt

	toymem is argv[0]

	in1.txt is argv[1]

	argc is 2 because there are two words on the line

Often specific programs look for optional arguments starting with a "-"

	Example:  ls -lR

		argc is 2
		argv[0] = ls
		argv[1] = -lR

		The ls.c program has code that sorts out that a "-lR" has a
		specific meaning.

Command window in Windows:
=========================

If you run the program from the command prompt, it's the same as Unix except
/arg is usually used instead of -arg.

VisualC++ Environment:
=====================
Briefly:

Assuming you have a "Console" application in Visual C++.

If you run the program from the VC++ IDE, the select Project/Settings then
select the Debug tab. It contains a field called Progam Arguments --
you can also put I/O redirection, such as < or >, in there if you like.


In more detail:

==> Go to Project \ Settings

	Note: the "Settings" choice is the last choice when you click on
	"Project".  Sometimes it is preceded by the name of your program; e.g.
	if your program is called Main, then it is called "Main Settings"

==> Choose the Debug tab

Then fill in the "Program Arguments" field with the
words that should follow the command name.
By the way, you enter these words with spaces
between them.  Don't put in commas or any other
punctuation between them.  Example:

	myfile.txt myotherfile.txt

	Note:  Once you have set the arguments, they stay the
	same, across multiple executions of your program, until 
	you change them.

- Another example:

In Project / Settings / Debug / Program Arguments
put this text:

                in1-01.txt out1-01.txt

to pass the two file names to the main function of your program
as argv[1] and argv[2].