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    time_t ltime;
    time( &ltime );
    tm *    pTm = localtime(&ltime);

    printf("%d",pTm->tm_wday);

output= 2 , how come while 2day is 8 -.- anyclue?

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tm_wday is the weekday, indexed from 0 being Sunday, to 6 being Saturday.

It is 2 today because it's a Tuesday.

What you want to access for the day of the month is tm_mday.

See also:

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Because tm_wday is the day since Sunday. Therefore it is 2. What you want is tm_mday

http://www.cplusplus.com/reference/clibrary/ctime/tm/

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