Extern Storage Class in C Programming Language Video Tutorial

Why extern . If you declare it as global variable then you would use that in both functions. Why we need to declare extern int in both functions

Is extern variable stored in heap? I think extern variable will stored in Data section

It would be better if you had showed the use of extern using two separate files of c.

Cant understand..,

what is the difference between global variable and extern variable?
and why to prefer extern over global variable?

You Know?

Why is it giving a undeclared error when you compile? If extern makes the variable global then it should be able to access it within every function. You have declare extern in a header file to make it accessible within all '.c' files.

very clear and concise. thank you so much for all of your videos.

keep up d good work...vry helpful viedos..:)