Figure 1

                 Customer Request

                 A way to echo
                 small letters as
                 capitals.

                    Specification

   We will write a C program that will read a
   character from a terminal device and echo
   back to the terminal device a capital when
   small letters are detected. Printable
   characters other than small letters will be echoed
   back unchanged.

                    Test Plan

Randomly generate characters. Pass if printable
characters other than small letters are echoed back
exactly as sent. Pass if small letters are echoed back
as capitals. Fail if other occurs.