怎样得到当前日期加上100天的日期？？

[zhanghf]

在vc sdk中的编程。

char* tem=NULL;
struct tm when;
__time64_t now;
int days=100;
_time64( &now );
when = *_localtime64( &now );

when.tm_mday = when.tm_mday + days;
tem=asctime( &when ) ;

tem得到的是只把月累加的结果（104天），没有因为过了31而进位，月和年都没有改变！

怎样才能得到正确的日期？？

[grooving]

up!

[rtdb]

_time64( &now );
when = *_localtime64( &now );
when.tm_mday = when.tm_mday + days;

改为
_time64( &now );
now += 100 * 24 * 60 * 60 ;
when = *_localtime64( &now );

[masterz]

Boost is handy.
#include "boost/date_time/gregorian/gregorian.hpp"
using namespace boost::gregorian;
date year_start = date(2004,01,15);
typedef boost::date_time::day_functor<date> add_day;
add_day mf( 100);
date d2 = year_start + mf.get_offset(year_start);