gistfile1.txt

#include <stdio.h>

typedef struct date_t {
    int year; int month; int day;
} date_t;

#define EPOCH 1970

void date_convert(date_t* date, unsigned int days) {
    int year = EPOCH, mo = 0, day = 1;
    while (days-- > 0)
    {
        // molen(), given a month and a year, returns the month's length
        if (day++ > 30)
        {
            day = 1; mo++;
        }
        if (mo > 11)
        {
            mo = 0; year++;
        }
    }

    date->year = year; date->month = mo; date->day = day;
}

int main() {
    // date1 and date2 are of type date_t
    unsigned int d1 = 10;
    unsigned int d2 = 20;
    unsigned int i;

    date_t date;

    for (i = d1; i <= d2; i++)
    {
        date_convert(&date, i); // The problem line
        printf("%d, %d, %d\n", date.year, date.month, date.day);
    }
}