Homework Assignemnt #2
User Manual

LIFE USER MANUAL (version 1.1)


A. INTRODUCTION
	This program is designed to mimic the game of life.
	It simulates a two-dimensional world where single-
	celled organisms thrive.  You have control over how
	many generations of these creatures are produced.
	The creatures are represented by *'s on the screen.
	In order to try this out, you must first create an
	executable file.

I.  CREATING THE EXECUTABLE FILE 
	Type make at the Unix prompt.  This will compile the 
	two .cc files, and include the .h files.  A file by
	the name of Life will be created.

II.  EXECUTING THE LIFE FILE
	To execute the Life file, you need only type "Life" at
	the command line.  This will run the program in
	INTERACTIVE mode, and will load a file called "initial" 
	as the world to test.  When you type "Life" at the 
	prompt, there are several options you may include.  
	These options are outlined under IV. COMMAND LINE
	OPTIONS.

III.  OPERATION MODES
	There are two modes in which the program can be run.
	The default is INTERACTIVE mode.  
		a) INTERACTIVE MODE
			In this mode you will be propted after
			each generation as to whether or not
			you want to see another generation.
			If you type Y or y followed by anything
			else, the next generation will be shown.
			If you don't enter a Y or y, the 
			program will end.
		b) NON-INTERACTIVE MODE
			Int this mode, a specified number of
			generations will be calculated.   
			This number is specified on the command
			line.  After these generations have
			been calculated, the final generation
			will be output, as will the amount
			of time these generations took to 
			calculate.
	Note:  In either mode the program will stop when all
		the cells have died.

IV.  COMMAND LINE OPTIONS
	There are two options that may be added to the command
	line when you type Life.  These are as follows:
		-b  	NON-INTERACTIVE MODE
			This flag tells the program that you 
			want to run the program in non-inter-
			active mode.  The "-b" must be followed
			by a non-negative integer which is the
			number of generations you want to see.
		-i	INPUT FILE
			This flag tells the program that you
			want to load the world from a file other
			than the default "initial".  The -i 
			must be followed by a filename.
	These flags can be used in any order, and may be used
	more than once.  If they are used more than once, only
	the last one will be the one that the program recognizes.