What do .c and .h file extensions mean to C?

Question

It\'s all in the title; super-simple I reckon, but it\'s so hard to search for syntactical things anywhere.

These are two library files that I\'m copying from CS50.n

Answer 1

.c : 'C' source code
.h : Header file

Usually, the .c files contain the implementation, and .h files contain the "interface" of an implementation.