#if defined(__linux__) || defined(__MINT__) # define _GNU_SOURCE /* strptime() */ #endif #include int main(void) { struct tm tm; const char input[] = "2014-01-04"; return( ! (input+10 == strptime(input, "%Y-%m-%d", &tm) && 114 == tm.tm_year && 0 == tm.tm_mon && 4 == tm.tm_mday)); }