#include <stdio.h> #include <time.h> int main() { time_t t = time(NULL); struct tm tm = *localtime(&t); printf("now: %d-%02d-%02d %02d:%02d:%02d ", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); }