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5_5.lha
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5_5B.h
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1993-08-08
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537b
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34 lines
* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
* The C++ Answer Book */
* Tony Hansen */
* All rights reserved. */
truct tree
tree *left, *right;
exprtype type;
int value;
tree() { left = right = 0; }
~tree() { delete left; delete right; }
void print(int level); // DELETE
;
lass expr
tree *head;
int evaluated, value;
ublic:
expr(char*);
~expr() { delete head; }
int eval();
void print();
void eprint(); // DELETE
;
truct token
exprtype type;
int value;
;