Programming assignment 3, due Monday, May 10, 10AM.

--------------- finding a path through a maze ---

Instructions:

1. Look at some sample mazes (in text format) such as ./Mazes/maze_10.txt .

2. Look at some sample solutions (in text format) such as ./Mazes/soln_10.txt .

3. Look to see what's in the ./Include directory.  In particular,
read the documentation for the Maze class in ./Include/Maze.h .
The Maze class is fully functional and provides a way of
reading a maze from std input and building a graph representing the maze.
It also provides methods for manipulating the text representation of the graph.

4. Your assignment is to complete the file ./find_and_mark_path.cc .
In that file, you will need to finish the function find_and_mark_path().
Given a maze (and a corresponding graph), this routine must find a path
from the start to the end (if one exists) and mark the path with
"#" characters in the textual representation of the maze.

5. When you complete step 4, run "make" to compile find_and_mark_path,
then run "make test" to test it.

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Note that there are no longer any ".cc" files in the ./Include directory.
All have been merged into their ".h" files.