inc Month

Dependents

this module uses 5 subunits dateYMDdaysInMonthdateconstantsisLeapYear

Interface

IncMonth

Returns the serial Julian date which equals nDate plus or minus the the specified number of months.

The month is modified using: . In circumstances where the new date has too many days for the month, the number of days are reduced to accommodate the month. For example: edate("30/March/2004", -1) is 29 February 2004.

Example 1

#include <stdio.h>
#include <codecogs/units/date/incmonth.h>
#include <codecogs/units/date/date.h> 
#include <codecogs/units/date/dateymd.h> 
using namespace Units::Date;
 
int main()
{
  for(int i=-12; i<=12; i++)
  {
    int d,m,y;
    dateYMD(incMonth(date("31,dec,2004"), i), y, m, d);
    printf("\n incMonth(date(\"31,dec,2004\"),%d)= %2d-%2d-%d",i, d, m, y);
  }
  return 0;
}

Output

19 February 2003 + -4 months is: 19-10-2002
19 February 2003 + -3 months is: 19-11-2002
19 February 2003 + -2 months is: 19-12-2002
19 February 2003 + -1 months is: 19-1-2003
19 February 2003 + 0 months is: 19-2-2003
19 February 2003 + 1 months is: 19-3-2003
19 February 2003 + 2 months is: 19-4-2003
19 February 2003 + 3 months is: 19-5-2003
19 February 2003 + 4 months is: 19-6-2003

Parameters

nDate	is the number of days from 24 November 4714 BC - otherwise known as the Julian Period (also 1 January 4713BC in the Julian Calendar).
months	are the number of months to add (a positive value) or subtract (a negative value) from nDate.
dateSystem	selects which date system should be used (see constants).

Authors

Will Bateman (Sep 2004)

Source Code

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