Where to learn advanced programing in C?

Question

Advanced means creating your own header files and developing small UI apps and etc.,

Answer 1

https://www.sololearn.com/post/47265/?ref=app

You may try anyone of these!!!

BalGuruSwamy is another great book for C Language!!

Answer 2

The book - "Head First C" (O'really publication) [I recommend]
Or
The Book - "Let Us C"(MC grew hill publication)