compasion of dates

This is a discussion on compasion of dates within the C Programming forums, part of the General Programming Boards category; how can i compare 2 days example date1=22:06:2007; date2=23:06:2007; how can i compare two dates thank u sree...

  1. #1
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    compasion of dates

    how can i compare 2 days
    example
    date1=22:06:2007;
    date2=23:06:2007;
    how can i compare two dates
    thank u
    sree

  2. #2
    Deathray Engineer MacGyver's Avatar
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    See the functions in time.h. Here's what the FAQ from this site says about dates and times:

    http://faq.cprogramming.com/cgi-bin/...&id=1043284392

    BTW, you're talking about the comparison of two dates.... compassion has a meaning related to love, mercy, and perhaps pity.

  3. #3
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    thank u for u r reply
    i already seen tht tutorial.
    but i didn't found any function for date.

  4. #4
    Deathray Engineer MacGyver's Avatar
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    You should look slightly closer at it since you should be able to do what you want with the functions in time.h. I would also suggest you search the forums since this subject has come up before.

  5. #5
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    i searched the forum i didn't get any help.
    i tried like this
    struct tm ctime,ptime;
    int y,m,d,y1,m1,d1;
    sscanf("23:06:2007", "%od:%od:%od", &y, &m, &d);
    ctime.tm_year=y;
    ctime.tm_mday=d;
    ctime.tm_mon=m;
    sscanf("22:06:2007", "%od:%od:%od", &y1, &m1, &d1);
    ptime.tm_year=y1;
    ptime.tm_mday=d1;
    ptime.tm_mon=m1;
    time_t now1,now2;
    now1=mktime(&ctime);
    now2=mktime(&ptime);
    g_print("***************** %d \n",difftime(now2,now1));


    but it's output is "0".
    thanks

  6. #6
    and the hat of wrongness Salem's Avatar
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    %od isn't a valid scanf format.
    %d isn't a valid format for printing a floating point value.
    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.
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  7. #7
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    thank u
    so please tell me wht should i do.
    with what character i should replace "%0d"

  8. #8
    Eager young mind
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    with a "%d". I just hope your teacher didnt teach u to put a " 0 " there.
    In the middle of difficulty, lies opportunity

  9. #9
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    yah i know .
    but can u tell me how we can compare dates

  10. #10
    Registered User ssharish2005's Avatar
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    Well, using the difftime would u cant compare dates. It will return values in seconds. Which is not useful is it?

    What u can go is, you can compare each values manually.

    ssharish2005

  11. #11
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    ok thank u for ur replyyy

  12. #12
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    take the years months and days as separated items. then, compare first the years and if they are similar then months then the days
    proud to be from aui www.aui.ma and also a great elton john's fan

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