## Exercise 4

Let's revisit input and output for a bit. You may not know how to
write loops in C yet, but your seminar tutor will surely help you
out. That said, write a program that does the following:

 1. read 50 bytes from ‹stdin›
 2. write those 50 bytes to ‹stdout›
 3. wait for 100 milliseconds (see ‹man 3 usleep›)
 4. repeat until there are no more bytes to read

You can try it on one of the longer files in here, e.g. ‹read.c›
like this:

    $ ./a.out < read.c
