系统时间的获取_ms

1.windows

#include <windows.h>
string getTime() {
	SYSTEMTIME st;
	GetLocalTime(&st);
	string tmp = to_string(st.wYear) + "-" + to_string(st.wMonth) + "-" + to_string(st.wDay) + "-" + to_string(st.wHour) + "-" + to_string(st.wMinute) + "-" + to_string(st.wSecond) + "-" + to_string(st.wMilliseconds);
	return tmp;
}

2.linux

#include <time.h>
#include <sys/time.h>
string get_time()
{
	string time;
	timeval tv;
	gettimeofday(&tv, NULL);

	struct tm* ptm;
	ptm = localtime(&(tv.tv_sec));

	char time_string[40];
	long milliseconds;

	strftime(time_string, sizeof(time_string), "%Y-%m-%d-%H-%M-%S-", ptm);
	milliseconds = tv.tv_usec / 1000;

	time = time_string + to_string(milliseconds);

	return time;
}