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C++ Discussion Thread
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Nov 21st, 2008

C++ / MFC Date Validation

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Hi,

i just need to know is there any method in MFC / C++
which will do the validation for the entered date.
ie if the date 12/11/2008 is given as input it should return saying the date is valid.i hope there exsists some standard function.
it should also check for leap leap year,and wrong date such as 31/11/2008 etc. thanks in advance.

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Nov 21st, 2008

Re: C++ / MFC Date Validation

you could try the parsedate() member of COleDateTime:

C++ Syntax (Toggle Plain Text)
if (!COleDateTime::ParseDateTime("12/11/2008")
{
     // That's not a date bucko!
}
if (!COleDateTime::ParseDateTime("12/11/2008")
{
     // That's not a date bucko!
}

I don't have MFC anymore, so I can't test it, but I'm sure it works somewhat like that. If this doesn't work you should have a look at the wxDateTime object from wxWidgets.

Last edited by Nick Evan; Nov 21st, 2008 at 9:34 am.

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Nov 22nd, 2008

Re: C++ / MFC Date Validation

Thanks

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Mar 3rd, 2009

Re: C++ / MFC Date Validation

C works in MFC right? (sprintf/sscanf)

c Syntax (Toggle Plain Text)
int main(int argc, char*argv[])
{
    int m,d,y;
    sscanf("%d/%d/%d", &m, &d, &y);
    if (checkdate(m,d,y)) 
    {
        printf("valid\n");
    }
    else
    {
        printf("invalid\n");
    }
}
 
 
bool checkdate(int m, int d, int y)
{
  //gregorian dates started in 1582
  if (! (1582<= y )  )//comment these 2 lines out if it bothers you
     return false;
  if (! (1<= m && m<=12) )
     return false;
  if (! (1<= d && d<=31) )
     return false;
  if ( (d==31) && (m==2 || m==4 || m==6 || m==9 || m==11) )
     return false;
  if ( (d==30) && (m==2) )
     return false;
  if ( (m==2) && (d==29) && (y%4!=0) )
     return false;
  if ( (m==2) && (d==29) && (y%400==0) )
     return true;
  if ( (m==2) && (d==29) && (y%100==0) )
     return false;
  if ( (m==2) && (d==29) && (y%4==0)  )
     return true;
 
  return true;
}
int main(int argc, char*argv[])
{
    int m,d,y;
    sscanf("%d/%d/%d", &m, &d, &y);
    if (checkdate(m,d,y)) 
    {
        printf("valid\n");
    }
    else
    {
        printf("invalid\n");
    }
}


bool checkdate(int m, int d, int y)
{
  //gregorian dates started in 1582
  if (! (1582<= y )  )//comment these 2 lines out if it bothers you
     return false;
  if (! (1<= m && m<=12) )
     return false;
  if (! (1<= d && d<=31) )
     return false;
  if ( (d==31) && (m==2 || m==4 || m==6 || m==9 || m==11) )
     return false;
  if ( (d==30) && (m==2) )
     return false;
  if ( (m==2) && (d==29) && (y%4!=0) )
     return false;
  if ( (m==2) && (d==29) && (y%400==0) )
     return true;
  if ( (m==2) && (d==29) && (y%100==0) )
     return false;
  if ( (m==2) && (d==29) && (y%4==0)  )
     return true;

  return true;
}

Last edited by blacklight332; Mar 3rd, 2009 at 10:28 pm.

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Mar 3rd, 2009

Re: C++ / MFC Date Validation

Stop spamming old threads, you *******!

Last edited by MosaicFuneral; Mar 3rd, 2009 at 10:18 pm.

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Mar 3rd, 2009

Re: C++ / MFC Date Validation

@MosaicFuneral

What are you talking about? Isn't this a CODE FORUM. So posting CODE on a CODE FORUM is okay right? Or did I miss the posting guidelines.

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Mar 3rd, 2009

Re: C++ / MFC Date Validation

>Or did I miss the posting guidelines.
Yes you did. And it's appropriately titled "Read This Before Posting":
http://www.daniweb.com/forums/thread78223.html

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