how to find the difference between two given dates

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Hello,

How to find the difference between two given dates, and difference should be in number of days.

Like: older Date is : 11-Jan-2012 18:31:55
new Date is : system current date.

with above dates, how to find the difference between these two dates in number of days.

can anyone give me some idea regarding this.

Thank you in Advance.

Posted 11-Mar-13 20:32pm

Kumar 09

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2 solutions

Solution 1

The idea is to convert both dates into a serial day number and then simply subtracting both numbers from each other.

One way of doing that is to use the C/C++ runtime function "time" to convert you dates into seconds since midnight 1.1.1970. Then, subtract both results from each other and you have the difference in seconds. Divide that by 86400 and you have the difference in days.

Posted 11-Mar-13 20:57pm

nv3

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Kumar 09 12-Mar-13 3:13am

any example

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Prasad_Kulkarni · Accepted Answer · 2013-03-11T21:12:00

Try this:

C++

#include <iostream>
#include "boost/date_time/gregorian/gregorian.hpp"

namespace bdt = boost::gregorian;

int main(void)
{
    bdt::date today(bdt::date(2010, bdt::Jun, 13));
    bdt::date electionDay(bdt::date(2010, bdt::Nov, 2));
    bdt::date_period range(today, electionDay);


    std::cout << "Days between " << today
              << " and " << electionDay
              << " is " << range.length() << std::endl;

    return 0;
}

Found it here[^]