objective-c - 2つのLinuxタイムスタンプの違いを理解する方法

Question

2つのLinuxタイムスタンプbegine-timeとexpire-timeがあります。これらの2つのタイムスタンプの差を時間、分秒で取得したいと思います。

言語：Objective C

"expire_time"： "1366927200"、 "begin_time"： "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);