c - Function prototype declared inside main - best practice?

Question

Is this a good style to have the function prototype declared inside of the main function?

I was looking at a C tutorial, I think is quite out of date. However, they declare the function prototype inside of main. I normally declare outside before main.

#include <stdio.h>

int main ()
{
    char myname [30];
    int theage;
    int getage ();

    printf ("
Enter your name:");
    gets (myname);
    theage = getage ();
    printf("
 AGE = %d and NAME = %s", theage, myname);
    return 0;
}

int getage ()
{
    int myage; /* local to only getage() */

    printf ("
Enter your age: ");
    scanf ("%d",&myage);
    return (myage);
}

Answer 1

I personally would say "no" for several reasons:

• it makes the code for main longer
• it may confuse a newbie into think ing the function is scoped by main
• in real code, I would normally put the function in a different compilation unit and #include its header file