College assignment help (part 1 of lindenmayer system)

College assignment help (part 1 of lindenmayer system)

Ok so I am struggling in this computer programming class, as I am totally
new to computer programming. let me post my actual assignment and then see
if anyone could help get me started with it.
assignment: This Lab is Part 1 of building a type of fractal called a
Lindenmayer system. In this first part, you will just be implementing
symple set of draw commands.
Write a program that takes 3 inputs: 1) Draw String: This must be a string
of draw commands (see the table below). 2) Length: This must be an integer
equal greater than 0 and less than or equal to 100. It defines the length
variable used in some of the draw commands. 3) Angle: This must be a
floating point number equal greater than 0.0 and less than or equal to
360.0. It defines the angle variable used in some of the draw commands.
Character Draw Commands h Draw a straight line segment length pixels long
in the current heading. f Same as h g Move, without drawing, a straight
line segment length pixels long in the current heading. +
Turn the heading clockwise by angle.
Turn the heading counter-clockwise by angle. A Each of these color
commands must change the turtle color to color that is different form the
background and different from the other 5 color commands. Pick colors that
you think look good together. B C D E F any other character Ignore
So, that is the assignment, sorry it's so long. I have been reading my
textbook, and unfortunately it gives very little info on how to actually
do this assignment. It also didn't help that our professor showed us all
these cool things fractals could do, but didn't actually tell us anything
about how to do the assignment (don't ask me why?)
I am really at a loss as to how to even begin to code this thing, if
someone could help me or at least point me in the right direction, at
starting to go about coding for this stuff, it would really help me out. I
don't expect anyone to do it all for me, just maybe help show me where to
begin.
PS. There is one other thin our professor wrote that is probably important.
Now that you have the "if" statement at your command, you do need to check
for bad input. If the user inputs bad data, print an error message and
exit the program.