miscellaneous

The reference

https://www.gnu.org/software/gnu-c-manual/

https://gcc.gnu.org/onlinedocs/gcc-2.95.3/cpp_toc.html#SEC_Contents

http://www.iu.hio.no/~mark/CTutorial/CTutorial.html

Well done!

https://www.programiz.com/c-programming

http://fresh2refresh.com/c-programming/

A lot of about C books thanks to Mr. Kute T. B.

https://sites.google.com/site/cprbooksite/

//Cairo

https://cairographics.org/

//Menehune

http://menehune.opt.wfu.edu/Kokua/Irix_6.5.21_doc_cd/usr/share/Insight/library/SGI_bookshelves/SGI_Developer/books/

El rincón del C

http://www.elrincondelc.com/nuevorincon/index.php

Programacion UTN-FRA

http://www.programacionutn.com.ar/links

Sanfoundry

http://www.sanfoundry.com/

Loirak

http://www.loirak.com/

SDL / SDL2

https://wiki.libsdl.org/Tutorials

https://wiki.libsdl.org/SDL_Init

http://lazyfoo.net/tutorials/SDL/01_hello_SDL/linux/cli/index.php