scope in nested function

[Bill Pursell <bill dot pursell at gmail dot com>]

I'm not sure how to reference a variable in a nested function from gdb.
In the gdb session below, there are 2 things I don't understand
how to do:

1) how do I set a breakpoint in foo? (other than by referencing a line
     	number)
2) when I'm in foo, how do I reference i?


#include <stdio.h>

int
main()
{
     auto void foo(void);
     int i = 0;
     foo();
     return 0;

     void foo(void) {
         i += 1;
     }
}




(gdb) b main
Breakpoint 1 at 0x8048361: file d.c, line 7.
(gdb) run
Starting program: /home/bill/tmp/a.out

Breakpoint 1, main () at d.c:7
7           int i = 0;
(gdb) b foo
Function "foo" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) n
8           foo();
(gdb) s
foo.0 () at d.c:11
11          void foo(void) {
(gdb) p i
No symbol "i" in current context.
(gdb) n
12              i += 1;
(gdb) cont
Continuing.

Program exited normally.