This GitHub repo includes all of the software demonstrated in this YouTube video:
Learn to program C on your Commodore 64 (C64) with Abacus Super C.
super-c-64.d64 - Abacus Super C v2.0 for the C64
helloWorld.d64 - Hello World source code
spritedemo.d64 - Sprite demo source code
cdemo.d64 - Super C Demo source code
Other Usefull Links
Disk Image for the C128 Disk Image for the c64
The Transactor Magazine article comparing Super-C to C Power by Pro-Line Software