......的含义[停止

Question

这是愚蠢的,但我必须知道(%)符号的含义,因为我想添加天.

这是一个例子.

int seconds = 78120;
int forHours = (seconds1 / 3600),
    remainder = (seconds1 % 3600),
    forMinutes = remainder / 60,
    forSeconds = remainder % 60;
    NSString *Time = [NSString stringWithFormat:@"%02i:%02i:%02i",forHours,forMinutes,forSeconds];
    Label.text = Time;

结果:21:42:00

我希望结果像( 0天,21:42:00)像(DD,HH:mm:ss)

Answer 1

它被称为模运算.当你划分一个数字时,它会留下什么(并且只考虑整数).

例子:

3 % 2 = 1
6 % 2 = 0
6 % 3 = 0
6 % 4 = 2