C ++将十进制小时转换为小时，分钟和秒 [英] C++ convert decimal hours into hours, minutes, and seconds

问题描述

我在MPH中有一些英里数和一个速度，我将其转换成以该速度行驶该距离所花费的小时数。现在，我需要将此十进制数转换为小时，分钟和秒。我该怎么做呢？我现在最好的猜测是：

I have some number of miles and a speed in MPH that I have converted into the number of hours it takes to travel that distance at that speed. Now I need to convert this decimal number into hours, minutes, and seconds. How do I do this? My best guess right now is:

double time = distance / speed;
int hours = time; // double to integer conversion chops off decimal
int minutes = (time - hours) * 60;
int seconds = (((time - hours) * 60) - minutes) * 60;

这对吗？有一个更好的方法吗？谢谢！

Is this right? Is there a better way to do this? Thanks!

推荐答案

我不知道c ++函数是我的首要任务，但是这种伪代码应该可以工作。 / p>

I don't know c++ functions off the top of my head, however this "psuedocode" should work.

double time = distance / speed;
int hours = time;
double minutesRemainder = (time - hours) * 60;
int minutes = minutesRemainder;
double secondsRemainder = (minutesRemainder - minutes) * 60;
int seconds = secondsRemainder;

更正不需要下限。

As只要有关它的评论不能在负数时间内起作用，物理学上就不能有负数的距离。我想这将是用户输入错误，而不是编码器错误！

As far as the comment about it not working for negative times, you can't have a negative distance in physics. I'd say that would be user input error, not coder error!

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