converting date to unix timestamp

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the input format is something of this syntax

    // date-time: day-date-fixed "-" date-month "-" date-year SP time SP zone
    // day-date-fixed: space-padded, or 2digit, day of month
    // date-month: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec
    // date-year: 4 digit year
    // time: 00:00:00, all fields 2 bytes
    // zone: offset in [+-]HHMM

and the output should be a unix timestamp

Below is code showing the setup to get the Epoch time. What you have to do is to parse the string (e.g., use strtok(), inserting into the struct tm components.  Then, mktime() does the conversion for you.

#include <stdio.h>
#include <time.h>

int main() {
   char * p = "31-Dec-2002 22:36:36 -0800";
   time_t epoch;

   struct tm date;

   memset( &date, 0, sizeof(date) );

   // Epoch time 0
   date.tm_hour = -8;
   date.tm_mday = 1;
   date.tm_year = 1970 - 1900;
   epoch = mktime( &date);
   printf(" Epoch = %d\n", epoch);

   date.tm_sec = 36;
   date.tm_min = 36;
   date.tm_hour = 22;
   date.tm_mday = 31;
   date.tm_mon = 11; // Dec
   date.tm_year = 2002 - 1900;

   date.tm_hour += -8;
   epoch = mktime( &date);


   printf(p); printf("\n");
   printf(" Epoch = %d\n", epoch);
}

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hi thanks for your help

would appreciate any example doing the parsing and populating the structure

thanks a lot

i am trying to use strptime and having problems with time zones

i will post that as a separate q
please do help if you can