28. Surprises

Change the program we just wrote so that:

mark_starting_point_and_move();

while ( !found_starting_point() ){
    follow_right_wall();
}

becomes:

while ( !at_goal() ){
    follow_right_wall();
}

Try it!

Run this program with the following hurdle races Hurdles 1, Hurdles 2 and Hurdles 3.

You will find that this program, which is quite different than the ones you had written before to solve the hurdles challenges, works just as well.

Try this!

Now, try it with Hurdles 4.

Surprise! It works whereas the previous program did not! Can you understand why it works?

Try these!

Run the same modified program again with both Maze 1 or Maze 2.

As you will see, this simple program can find the exit to the mazes!

Amazing!