objective-c - 如何获取两个linux时间戳之间的差异

Question

我有两个 linux 时间戳 begine-time 和 expire-time，我想以小时、分钟秒为单位计算这两个时间戳之间的差异。

语言：目标 C

“过期时间”：“1366927200”，“开始时间”：“1327532400”，

Answer 1

int beginTime = 1327532400;
int expireTime = 1366927200;
int diff = expireTime - beginTime;

#define SEC_PER_MIN 60
#define SEC_PER_HOUR (SEC_PER_MIN * 60)
#define SEC_PER_DAY (SEC_PER_HOUR * 24)

int days = diff / SEC_PER_DAY;
diff -= days * SEC_PER_DAY;
int hours = diff / SEC_PER_HOUR;
diff -= hours * SEC_PER_HOUR;
int minutes = diff / SEC_PER_MIN;
diff -= minutes * SEC_PER_MIN;
int seconds = diff;

NSLog(@"%d d, %d h, %d m and %d s.", days, hours, minutes, seconds);