alendar year. The current calendar is called the Gregorian calendar, was introduced in 1582. Every year divisible by four was created to be a leap yer, with exception of the years ending with 00 (that is, those divisible by 100) and not divisible by 400. For instance, the years 1600 and 2000 are leap years, but 1700, 1800, and 1900 are not. Write a ptogram that requests a year as input states wether it is a leap year.