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вернуться в форум1700, 1800, 1900 are not leap years;
year Y is leap
if
Y mod 4 = 0
if
Y mod 400 = 0
but
if Y mod 100 = 0 and Y mod 400 <> 0 then the year is not leap yeah thx i know those years are not leap ones.
i was just a little confused with the january 1st 1600.
my solution got AC
thx anyway In the Julian calendar every year that is divisible by 4 is leap. in Gregorian if year is century must be divisible by 400 to be leap. it is so because in every 400 years by julian 3 exess days(to be more certain 1 in 128 years). we began to use gregorian calendar after 1900 year so you see every year before 1918 if year is divisible by 4 then it is leap. |
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