cstring manipulation - east ponits

Posted on 2006-05-11
Medium Priority
Last Modified: 2010-04-01
I have a CString varible with a date in "YYYYMMDD" format.  I need to make the date in this format "MMDDYY" any ideas? thanks in advance
Question by:meatdog8
  • 2

Expert Comment

ID: 16662605
A function like this could take a string and change the date.
void YMDTOMDY(char *String,char Delim=0)
      bool UD = false; //Check if delimiter is used (when Delim is 0, it is not used)
      if (Delim !=0) UD = true;
      char Year[2];
      Year[0] = String[2]; //Store the year from the string
      Year[1] = String[3];

      String[0] = String[4+UD]; //Set the first bit to the month (+1 for delimiter if there)
      String[1] = String[5+UD];
      if (UD == true)
            String[2] = Delim; //If there is a delimiter, use one too
      String[2+UD] = String[6+(UD*2)];//set next bit of string to the day +2 for delimiter if there
      String[3+UD] = String[7+(UD*2)];
      if (UD == true)
            String[5] = Delim;//if delimiter, use one for ours too
      String[4+(UD*2)] = Year[0];//set last bit to our year which we saved
      String[5+(UD*2)] = Year[1];

      String[6+(UD*2)] = '\0'; //End string since we shortened it. (add terminator)

Expert Comment

ID: 16662629
Then you could just make a call with your original string such as:

char Convert[9]="20060511";
YMDTOMDY(Convert); //no need for delimiter parameter due to default =0 assignment

OR (With a delimiter)

char Convert[11]="2006/05/11";

And you will result in your Convert being MM(/)DD(/)YY (Where (/) is optional and cusomizable)
LVL 14

Accepted Solution

wayside earned 200 total points
ID: 16711420
No need to deal with char *'s when working with CString. Plus, if you pass in a static string like "20060518" to the above function it will most likely crash, because static strings are generally stored in a RO section.

Try this:

CString oldDate("20060518");

// convert to MMDDYY
CString newDate = oldDate.Mid(4,2) + oldDate.Mid(6,2) + oldDate.Mid(2,2);


Author Comment

ID: 16733895
wayside, thank you... worked great.  

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