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int getDays(int setYear, int setMonth, int setDay, int nowYear, int nowMonth, int nowDay)
{
CTime t1(setYear, setMonth, setDay, 0, 0, 0);
CTime t2(nowYear, nowMonth, nowDay, 0, 0, 0);
CTimeSpan ts = t2 - t1;
return ts.GetDays();
}
void CTestDlg::OnBnClickedButton2()
{
// TODO: 在此添加控件通知处理程序代码
int i = getDays(1998, 1, 1, 2001, 3, 3);
}