int     a = 0;
void
cool2 ()
{
	printf ("a = %d\n", a);
}
int
cool ()
{
       a += 3;


cool2();

       return (a);
}
int
main()
{
       int     b = 0;
       int     c = 1;


	printf ("a = %d b = %d c = %d\n", a, b, c);
       b = cool ();
	printf ("a = %d b = %d c = %d\n", a, b, c);


       c += 1;
	printf ("a = %d b = %d c = %d\n", a, b, c);
       a -= 2;
	printf ("a = %d b = %d c = %d\n", a, b, c);


return (0);
}