Could you imagine that you can write a C code to control scratch sprites?
Now, you just need to use this framework.
I have implemented a C compiler and some libraries through which your C program can interact with scratch conveniently.
github project

Interesting stuff. Any demonstration on scratch? I'm not sure if I can build this code since it uses Windows.h. How does your project work? How long have you spent working on it?

ninjaMAR wrote:

Interesting stuff. Any demonstration on scratch? I'm not sure if I can build this code since it uses Windows.h. How does your project work? How long have you spent working on it?

I have not made a demonstration up to now but soon I may make one.
You can only use the libraries in this project instead of the standard C libraries, and the libraries of this project are described in the file s·C·ratch Standard v1.0.pdf..
How it works is also introduced in the pdf file.(You may need to translate it)
I have been working on this project for two years.