## Exercise 1

 1. Take the program in ‹shvar.c› and rewrite it to use ‹fork› and
    processes instead of threads.
 2. Run the result to demonstrate that the variable ‹x› is not
    shared -- the parent changing the variable will not affect its
    value in the child process.

We can move on to data races now, see ‹race.c›.
