Function Pointer question

Question

#include<stdio.h>

int main ( )

{

  int demo ( ); // What is this and what does it do?

   demo ( );

   (*demo) ( );

}

int demo ( )

{

   printf("Morning");

}
 

Comments

read https://stackoverflow.com/a/37269688

---

It is a declaration of demo()

---

  int demo ( ); // What is this and what does it do? ->> declaration of function..

   (*demo) ( ); but this notation says...demo is a pointer to function..