Course 149 - Fall 1997
                Assignment 3

   (1) Look at Problem 5 at the web location
               http://www.math.mu.edu/~wimr/Spring97/149/
at Homework 5 and its Answer 5. It discusses forking through three examples.
   (2) This time we are going to combine forking with execve, program overlay.
The combination of forking and overlay is used to create the multiple processes
that one finds running on the computer.
   (3) Look up fork and execve using the man pages (man fork  or  man execve).
   (4) Here is the simple assignment combining forking and execve. Create two
programs, called  pr.out  and  ch.out  (compiled from C programs). The first
program, pr.out, announces that it starts running. Then it creates a child that
turns into  ch.out.  Finally,  pr.out  comments that it will finish, and stops.
The program  ch.out  in turn prints to the screen that it is alive, and stops.
   (5) Email your programs  pr.C  and  ch.C  to me once they work.

  Due date: 3 November 1997.