A small programming challenge.

[Kevin Pollard]

I have written some code to accept command line parameters and apply
meaningful parameters - but I feel it is an interesting problem which
must have some neat solutions.

The task is:
	allow up to 4 parameters to be entered on the command line
	(that is, progname [ p1 [ p2 [ p3 [ p4 ] ] ] ] if you know what I mean) 
	The program is to accept the parameters. If the a parameter
	is missing then it is to default to the parameter is to 
	default to the one before it.
	(that is, if  progname x y z   is entered, then the 4th parameter
	 is to default to z)
	and so on down to the first parameter which is to have a hard
	coded default. If no parameters were entered then all parmeters
	would end up defaulting to this hard coded default.



Does anyone out there know of some neat ways of doing this.

This is really an algorithm problem, but since there is no algorithm
newsgroup, and I program in C on an IBM-type machine, this would be
a relevant newsgroup.

-- 
Kevin Pollard			Internet:	kevin at loki.une.oz.au
 University of NewEngland
	Northern Rivers		Phone:		+61 (066) 203694
Lismore NSW Australia		"My brain hurts"