How the static variable gets retrieved for every function call

Question

We know that when the control exits from function the stack space will be freed. So what happens for static variables. Will they be saved in any memory and retrieved when the function gets called ??

Answer 1

The wiki says:

In the C programming language, static is used with global variables and functions to set their scope to the containing file. In local variables, static is used to store the variable in the statically allocated memory instead of the automatically allocated memory. While the language does not dictate the implementation of either type of memory, statically allocated memory is typically reserved in data segment of the program at compile time, while the automatically allocated memory is normally implemented as a transient call stack.

and

Static local variables: variables declared as static inside a function are statically allocated while having the same scope as automatic local variables. Hence whatever values the function puts into its static local variables during one call will still be present when the function is called again.

Answer 2

Yes, static variables persist between function calls. They reside in data section of the program, like global variables.

You can (and probably should) read more about general memory layout of C applications here.