作者Jiun Yu

這樣? 這東西直接自己寫一個比較快

http://imgur.com/LiLQfHe.jpg


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

#define SECS_PER_HOUR 3600

int main(int argc, char *argv[])
{
int curr_time = (int)time(NULL);
int h;
int new_time;

h = (argc == 2) ? atoi(argv[1]) : 0;

new_time = curr_time - (h * SECS_PER_HOUR);

printf("%s\n", asctime(localtime((time_t *)&new_time)));

return 0;
}