What is the use of static functions in c? How it is allowed to use them in different files ?

Question

Static keyword

Answer 1

Additional resource:

https://www.geeksforgeeks.org/what-are-static-functions-in-c/

Answer 2

look at this code and you'll understand

static variables basically saves the value on the function and doesn't get deleted / overwritten when the function is called again.

https://code.sololearn.com/cWGssWjLO2Bu/?ref=app

Answer 3

Thank you