time.h and time_t

i seem to having a lot! of trouble getting the system date into this format yyyymmdd and i have been trying out the time_t struct thing but i cant seem to get it to work... when i try to display things using it crashes anyone have any examples :(

Code:

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

int main ( ) {
    char    buff[100];
    time_t  now;
    now = time(NULL);
    strftime( buff, sizeof(buff), "%Y%m%d", localtime(&now) );
    printf( "Now=%s\n", buff );
    return 0;
}

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salem i bow down to you lol i cant believe my problem was this simple! i forgot to time(NULL);
:(