Thread: extracting info from strdate

  1. #1
    Registered User
    Join Date
    Sep 2001

    extracting info from strdate

    // The program below gives the output "10/010/01"
    //But I only want the dd of mm/dd/yy.
    //How do I extract just the day? Thanks.

    #include <time.h>
    #include <iostream.h>
    #include <string.h>

    int main()

    char datebuf[9];
    char day[2];
    char *digit1=&datebuf[3];
    char *digit2=&datebuf[4];

    return 0;


  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    > char day[2];
    You need at least 3 chars to store "dd\0" - gotta remember that \0 when dealing with 'C' style strings

    > char *digit1=&datebuf[3];
    > char *digit2=&datebuf[4];
    Ok, but unnecessary...

    > strcpy(day,digit1);
    > strcat(day,digit2);
    This is where the problem is - using strcpy and strcat to copy single chars
    day[0] = datebuff[3];
    day[1] = datebuff[4];
    day[2] = '\0';
    Or if you insist on using a str... function
    strncpy( day, &datebuff[3], 2 );
    day[2] = '\0';
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Registered User
    Join Date
    Sep 2001


    Thanks so much, Salem.

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