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#ifndef TREE_H
#define TREE_H
typedef struct parse_tree {
int type;
union {
int ival; /* NUM */
float rval; /* RNUM */
node *nval;
int opval; /* RELOP: LT LE GT GE EQ NE
ADDOP: PLUS MINUS OR
MULOP: MUL DIV
*/
} attr;
struct parse_tree *l, *r;
} ptree;
void aux_tree_print(ptree*, int);
void print_tree(ptree*);
ptree* mktree(int, ptree*, ptree*);
ptree* mkid(node*);
ptree* mkinum(int);
ptree* mkrnum(float);
ptree* mkop(int, int, ptree*, ptree*);
#endif
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