add created date field with 30 days in sharepoint

Bharathi Paulraj 1 Reputation point

how to add created date(default date and time column) with 30days in c# from sharepoint.
Using caml query is it possible?
i am using sharepoint 2016 onpremise.

SharePoint Development
SharePoint Development
SharePoint: A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.Development: The process of researching, productizing, and refining new or existing technologies.
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