Date / Time Class

Mike Certini

I need to find the best time class to use with a program that works with a date/time number in the following format: yyyy.mm.dd hh:mm:ss.ms. Essentially, I am reading values from a flat file (CSV) into a variable and then working with the variable. Does anyone out there know the best class to use? I have researched CFileTime and CTime classes. I do not know if functions within are the best for manipulating time. CTime has been ruled out because it does not accomodate milliseconds. Are there other classes I am not aware of? Lastly is there any references (links) showing how the functions are used. The overall application involves exporting the applicable function through a DLL into an MQL4 script.

Chandrasekharan P

You need to make your own class for ms calculation. There is no ready made classes available for that.

Every new day is another chance to change your life.

_Superman_

The COleDateTime Class[^] should work for you.

«_Superman_» _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C

Code o mat

Don't know if it is available to you or not or that if it can do what you need or not but check out boost::date_time[^], maybe it can help.

> The problem with computers is that they do what you tell them to do and not what you want them to do. < > If it doesn't matter, it's antimatter.<

jschell

Mike Certini wrote:

need to find the best time class to use with a program that works with a date/time number in the following format: yyyy.mm.dd hh:mm:ss.ms.

As a note... That is a timestamp. Timestamps always have a timezone either implicitly or explicitly. So one should always figure out what the timezone is and how it is defined.

loveheronly

time_t curr_time = time(NULL); struct tm *pt = NULL; pt = localtime(&curr_time); char cTime[256],cTime1; sprintf(cTime,"%04d.%02d.%02d%02d:%02d:%02d",pt->tm_year+1900, pt->tm_mon+1, pt->tm_mday,pt->tm_hour,pt->tm_min,pt->tm_sec);

Mike Certini

loveheronly, Excellent, thank you for your reply. Does the time_t container accomodate milliseconds?

Mike Certini

After considerable research I have come up with the following solution which is 95% complete. I though cannot figure out how to report the milliseconds.

#include #using using namespace System;
using namespace System::Globalization;
using System::String;

int main()
{
// Assume the current culture is en-US.
// The date is Feburary 16, 1992, 12 hours, 15 minutes and 12 seconds and 253 milliseconds.

String\* myDateTimeValue = S"02/16/1992 12:15:12.253";
String\* expectedFormats\[\] = {S"MM/dd/yyyy hh:mm:ss.FFF"};
IFormatProvider\* culture = new CultureInfo(S"en-US", true);
DateTime myDateTime = DateTime::ParseExact(myDateTimeValue, expectedFormats, culture, DateTimeStyles::AssumeLocal);
Console::WriteLine(S"1) myDateTime       = {0}", \_\_box(myDateTime));

system("pause");
}

loveheronly

#include <time.h>

clock_t start=clock();

//...

clock_t end=clock();

unsigned int dis_time=end-start;