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

int main(int argc, const char *argv[])
{
    char str[] = "07.10.2022";
    struct tm timeptr;
    strptime(str, "%d.%m.%Y", &timeptr);
    printf("%d%d%d\n", timeptr.tm_year + 1900,  timeptr.tm_mon + 1, timeptr.tm_mday);


    return 0;
}