uses DateUtils; var s,s1,s2:TDateTime; year,month,day:word; begin s:=strtodatetime('2002-05-02'); DecodeDate(s,year,month,day); s1:=incDay(s,-day+1); s2:=incDay(s1,DaysInMonth(s1)-1); showmessage(datetostr(s1)); showmessage(datetostr(s2)); end;
uses DateUtils; var s,s1,s2:TDateTime; year,month,day:word; begin s:=strtodatetime('2002-05-02'); month:=s.month; while s.month=month then s:=incDay(s,-1); s1:=incDay(s,1); s:=strtodatetime('2002-05-02'); month:=s.month; while s.month=month then s:=incDay(s,1); s2:=incDay(s,-1); end;
var
s,s1,s2:TDateTime;
year,month,day:word;
begin
s:=strtodatetime('2002-05-02');
DecodeDate(s,year,month,day);
s1:=incDay(s,-day+1);
s2:=incDay(s1,DaysInMonth(s1)-1);
showmessage(datetostr(s1));
showmessage(datetostr(s2));
end;
var
s,s1,s2:TDateTime;
year,month,day:word;
begin
s:=strtodatetime('2002-05-02');
month:=s.month;
while s.month=month then
s:=incDay(s,-1);
s1:=incDay(s,1); s:=strtodatetime('2002-05-02');
month:=s.month;
while s.month=month then
s:=incDay(s,1);
s2:=incDay(s,-1);
end;
dt,dt1,dt2:TDateTime;
year,month,day: word;
begin
dt := strtodatetime('2002-05-02');;
DecodeDate(dt,year,month,day);
dt1 := EncodeDate(year,month,1);
dt2 := EndOfAMonth(Year,Month);
showmessage(dateTostr(dt1) + ' ' + datetostr(dt2));
end;
var
dt,dt1,dt2:TDateTime;
year,month,day: word;
begin
dt := strtodatetime('2002-2-02');
DecodeDate(dt,year,month,day);
dt1 := EncodeDate(year,month,1);
//dt2 := EndOfAMonth(Year,Month);
if month = 12 then
dt2 := EncodeDate(year+1,1,1)
else
dt2 := EncodeDate(year,month+1,1);
dt2 := dt2 -1;
showmessage(dateTostr(dt1) + ' ' + datetostr(dt2));
end;
Date1:=EncodeDate(2003,6,1);
取5月份的最后一天:
Date1:=EncodeDate(2003,6,1);
Date1:=Date1-1;