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# should i us if/eslse if or int.

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Danielle deWaard on 29 Jul 2021
Answered: Kshitij Chhabra on 4 Aug 2021
I am having trouble with a code that is depicting days. i have three different rates. one being the daily rate used for 1-2.4 days. weekly rate starts from 2.5-17.63. and monthly goes from 17.65-30 days.
At first thought, the If/Elseif seems the most logical until it becomes something like 34 days, where i need the program to depictthat it is 34 days and now it needs to add the monthly and the weekly or 61 days - where it now needs to depict two monthly rates and then a daily rate. and so on and so forth
I dont know if someone has any advice or more knowledge on the intergration function and if that is a route i should consider taking instead.
Thank you in advance for any help.
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Cris LaPierre on 29 Jul 2021
I understand the issue with number of days, and how an if/else statement can possible help out there. You lost me, though, when you started talking about integration. I think we are missing some important details necessary for understanding your question. Can you please clarify? If you have some code already, please share that as well.

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### Answers (1)

Kshitij Chhabra on 4 Aug 2021
From my understanding of the question, you want to implement an if/else if ladder to calculate the rate which you should use for the following day. An approach which I can suggest is using the mod function along with division in MATLAB.
In your case, lets say that you find the rate for 68 days and you have a dailyRate, weeeklyRate and a monthlyRate, you can compute the final rate as follows:
input=68;
months=floor(input/30);
days=mod(input,30) ;
rate=0;
if(days<=2.4)
rate=dailyRate;
elseif(days>=2.5 & days<=17.63)
rate=weeklyRate;
else
rate=monthlyRate;
end
rate=monthlyRate*months+rate;
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