std::time
Defined in header <ctime> | | |
|---|---|---|
std::time_t time( std::time_t* arg ); | | |
返回当前日历时间，该时间编码为std::time_t对象，并将其存储在arg，除非arg为空指针。
参数
arg | - | pointer to a std::time_t object to store the time, or a null pointer |
|---|
返回值
当前日历时间编码为std::time_t反对成功，(std::time_t)(-1)关于错误。如果arg，则返回值也存储在arg...
注记
例
二次
#include <ctime>
#include <iostream>
int main()
{
std::time_t result = std::time(nullptr);
std::cout << std::asctime(std::localtime(&result))
<< result << " seconds since the Epoch\n";
}二次
产出：
二次
Wed Sep 21 10:27:52 2011
1316615272 seconds since the Epoch二次
另见
localtime | converts time since epoch to calendar time expressed as local time (function) |
|---|---|
gmtime | converts time since epoch to calendar time expressed as Universal Coordinated Time (function) |
system_clock (C++11) | wall clock time from the system-wide realtime clock (class) |
c时间文件
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