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Asked: 2026-05-12T11:11:05+00:00

Any year evenly divisible by 400 is a leap year (e.g., 2000 was a

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  • Any year evenly divisible by 400 is a leap year (e.g., 2000 was a leap year).
  • Any other year evenly divisible by 100 is not a leap year (e.g., 1700, 1800 and 1900 were not leap years).
  • Any other year evenly divisible by 4 is a leap year (e.g., 1996 and 2004 are leap years).

But I’m not sure how to make nested if states in my c-program that would produce the right answer…

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1 Answer

  1. Editorial Team

    Convert them both to UNIX epoch time and subtract the difference.

    UNIX Epoch time is the total number of seconds for a date since 1 January 1970 00:00:00.0

    Once you’ve got the number of seconds, you divide that difference by the number of seconds in a day (which is 24 hours * 60 minutes * 60 seconds = 86400 seconds).

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