This directory contains a version of the stack development with
the following components:

stack.h:    array-based stack data type
stack.c:    empty_stack(), isempty(), depth(), push(), top(), destroy_stack()
            implemented, stubs for the rest.
test1.c:    first test case using CHECK_* macros
test2.c:    second test case using CHECK_* macros
test3.c:    third test case using CHECK_* macros
Makefile:   fully functional Makefile to compile and test test1..3
checker:    fully functional perl script
bool.h:     basic boolean type
check.h:    the CHECK_* macros

RESULT:     test1 and test2 pass. test3 needs pop() to work.
