#ifndef __PARSER_H__
#define __PARSER_H__
+/* global variables */
+
+extern double answer;
+
/* function type */
typedef enum {
Pow, Sqr,
Cos, Sin, Atan,
Log, Exp,
+ Store, Recall, Disp,
Quit, Help,
- E, Pi
+ Ans, E, Pi,
+ Equal, Diff, Ge, Le, Gt, Lt
} func_t;
/* keyword type */