C 日期时间 time 年月日小时分秒

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stddef.h>
#include <time.h>

int main()
{
    struct tm *t;
    time_t tt;
    time(&tt);
    t = localtime(&tt);
    printf("%4d-%02d-%02d %02d:%02d:%02d\n", t->tm_year+1900, t->tm_mon+1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);

    //printf("Hello world!\n");
    return 0;
}