跨平台的方式来获得一天的时间？ [英] Cross Platform way to get the time of day?

问题描述

有一个简单的方法来获取时间的时间（17:30，01:20 ...等），将工作在iOS，OSX，Linux和Windows？

Is there a simple way to get time time of day (17:30, 01:20...etc) that would work on iOS, OSX, Linux and Windows?

如果没有，是否有Windows方式和posix方式或某物？

If not is there a Windows way and a posix way or something?

感谢

推荐答案

您可以使用 time_t now = time（NULL）; 或时间（& now）检索时间;

然后你通常转换为本地时间 struct tm * tm_now = localtime（& now）; 。 struct tm 包含年，月，日，星期，小时，分钟和秒的字段。如果你想产生可打印输出， strftime 支持直接。

You then usually convert to local time with struct tm *tm_now = localtime(&now);. A struct tm contains fields for the year, month, day, day of week, hour, minute, and second. If you want to produce printable output, strftime supports that directly.

这两个都在C和C +

Both of these are in the C and C++ standards, so they are available on most normal platforms.

如果你真的只关心C ++，你可以使用 std :: put_time ，类似于 strftime ，但对于将输出写入流的典型情况，使用起来稍微简单一些。

If you really only care about C++, you can use std::put_time, which is similar to strftime, but a little bit simpler to use for the typical case of writing the output to a stream.

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