[Help] How can I make a Strafe Hack in C++?

I want to make a strafe hack in c++, here is a basic outline of what I think the code is going to be.

attach to css
find the default viewangle
if viewangle moves left while holding space, hold a.
if viewangle moves right while holdspace, hold d.


If this is basically what a strafe hack is, how can I take this outline and turn it in to real programming? I am familiar with C++ so don't think im a noobie.

Thanks :D