extern struct declaration in C

Question

I'm fairly new to C, hence could someone please help me understand the below struct declaration?

extern struct server_module* module_open (const char* module_path);

Per my understanding, module_open is pointer to the struct server_module , however, didn't understand the last part of the statement ie (const char* module_path)

Answer 1

extern struct server_module* module_open (const char* module_path); declares module_open to be a function taking a parameter named module_path of type const char * and returning a struct server-module * .

Answer 2

module_open is a function which returns pointer to struct server_module

and const char* module_path is input argument type. Means function takes character string as an input extern keyword is used to tell compiler that symbol is exist in different file