A leap year in the Gregorian calendar system is a year thats divisible by 4, but not divisible by 100, unless it is divisible by 400. For example, 1896, 1904, and 2000 were leap years but 1900 was not. Write a C++ function that takes a year as input and returns whether its a leap year. Test data, show results from entering 1896, 1904, 2000, 2001, 2020, 1700.