1 typedef enum { one, two, three } etype;
2 typedef enum { cero, uno, dos } stype;
3 typedef enum _ietag { siete } itype; /* 11. enum _ietag specified but not defined */
5 typedef struct { int a; int b; } st;
6 typedef struct { int a; int b; int c; } st2; /* (5. Field present in spec...) */
8 enum { hasta, pasta, yasta } ;