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5_9.lha
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5_9a5.c
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1993-08-08
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739b
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* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
* The C++ Answer Book */
* Tony Hansen */
* All rights reserved. */
oid set(date& dt, int m, int d, int y)
dt.month = m;
dt.day = d;
dt.year = y;
oid get(const date& dt, int& m, int& d, int& y)
m = dt.month;
d = dt.day;
y = dt.year;
tatic int numdays[] =
{
31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31
};
oid next(date& dt)
if (++dt.day > 28)
{
int maxday = numdays[dt.month-1];
if ((dt.month == 2) && (dt.year % 4 == 0) &&
((dt.year % 100 != 0) ||
(dt.year % 400 == 0)))
maxday++;
if (dt.day > maxday)
{
dt.month++;
dt.day = 0;
if (dt.month > 12)
{
dt.month = 1;
dt.year++;
}
}
}