typedef union
#ifdef __cplusplus
	YYSTYPE
#endif
 
{
    struct { int label;
	     int jumpto;
	     int whilenum;} semtype;
} YYSTYPE;
extern YYSTYPE yylval;
# define ASS 257
# define WHILE 258
# define COND 259
# define DO 260
# define GOTO 261