I'm trying to form a mental model of something that is never truly explained in any post or tutorial.

What is the purpose of the following files:

• .c
• .h
• .a
• .o

.c now I assume I could write the whole program in this one file but honestly I like making libraries so I guess my functions go somewhere else and are included in. But is that where the .h comes in?

As for .a and .o let's go, tell me more 😁 are there any more of the alphabet I should know?

.c .h .a .o .s seems like there a hidden meaning to c programming?