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5_5.lha
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5_5
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5_5b1.c
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1993-08-08
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264b
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15 lines
* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
* The C++ Answer Book */
* Tony Hansen */
* All rights reserved. */
/ Evaluate the expression
nt expr:: eval()
if (!evaluated)
{
value = treeval(head);
evaluated++;
}
return value;