Re^4: perl basic count days between two dates

ok using the debug method you have shown my numberofdays sub seem to be out by 1. e.g print "1,1,1,1 == " = O- which is ok. print "1,1,5,1 == " = 0 because the format of the sub is d,cd,m,cm: so when I changed it to 1,1,1,5 it printed 121- which is ok. Now here is where it got weird. "1,1,1,2 == 32 (should be 31) again print "8,3,3,8 == 149 (should be 148). How is it possible to be half correct??

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Re^5: perl basic count days between two dates by SuicideJunkie (Vicar) on Oct 03, 2013 at 14:13 UTC
This is where you should follow the flow of the subroutine with those print statements. Follow along with the math and see where your answer differs from what it should be. Look particularly closely at points where something new changes (such as the first/last day of a month)	[reply]
Re^5: perl basic count days between two dates by jethro (Monsignor) on Oct 04, 2013 at 13:31 UTC
What SuicideJunkie said. Either the logic in NumberOfDaysBetween is wrong or you have to test the subroutines in there (NumberOfDaysInMonth and cumulativeDaysInMonths) similar to NumberOfDaysBetween. If one or both of them produce wrong results then plaster them with print statements until you know what is going on. PS: Looked at your code again and subroutines are difficult to see because there isn't even one empty line separating them. Programs are easier to read for humans when structure can be seen at a glance. I even tend to separate subs with lines like "#----------------------" additionally to a few empty lines.	[reply]