use C::Scan;

$c = new C::Scan(filename => 'test.c',
                filename_filter => 'test.c'
               );

#
# Fetch and iterate through information about function declarations.
#
my $array_ref = $c->get('fdecls');
foreach my $func (@$array_ref) {
   my ($type, $name, $args, $full_text, undef) = @$func;
   foreach my $arg (@$args) {
       my ($atype, $aname, $aargs, $full_text, $array_modifiers) = @$arg;
   }
}

#
# Fetch and iterate through information about #define macros w/args.
#
my $hash_ref = $c->get('defines_args');
foreach my $macro_name (keys %$hash_ref) {
	print "$macro_name \n";
   my $array_ref = $macros_hash{$macro_name};
   my ($arg_ref, $macro_text) = @$array_ref;
   my @macro_args = @$arg_ref;
}