Trouble with time.h

How come the two dates printed out by this program are the same? :(

Code:

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

int main()
{
        time_t t, t2;
        struct tm* current_time, *other_time;
        time(&t);
        t2 = t + (11 * 24 * 60 * 60);
        current_time=gmtime(&t);
        other_time=gmtime(&t2);
        printf("%d %d %d\n", current_time->tm_mon, current_time->tm_mday, current_time->tm_year+1900);
        printf("%d %d %d\n", other_time->tm_mon, other_time->tm_mday, other_time->tm_year+1900);
        return 0;
}

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Quote:

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Originally Posted by Boxknife

How come the two dates printed out by this program are the same? :(

Code:

---

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

int main()
{
    time_t t, t2;
    struct tm* current_time, *other_time;
    time(&t);
    t2 = t + (11 * 24 * 60 * 60);
    current_time=gmtime(&t);
    other_time=gmtime(&t2);
    printf("%d %d %d\n", current_time->tm_mon, current_time->tm_mday, current_time->tm_year+1900);
    printf("%d %d %d\n", other_time->tm_mon, other_time->tm_mday, other_time->tm_year+1900);
    return 0;
}

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"gmtime" returns an internally allocated structure which gets overwritten on each successive call. In other words, you need to copy the data before you call the function again.

Thanks!