Homework #1
Due 30 January, 1992

Write a C program that uses the fork, pipe, and exec system calls
to simulate the following C-shell script:

	#! /bin/csh -f
	fgrep $1 | fgrep $2

You must write your own program.
You can ask others for help about how system calls work.
You can ask others for help in programming with C.
You can ask others for help in debugging your program.

Note:  You do NOT need to know about how fgrep works.
All you do is ``call'' fgrep using exec.