c$++$ A year in the modern Gregorian Calendar consists of $365$ days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every $4$ years, a leap year takes place. A leap year is when a year has $366$ days: An extra day, February $29$th$.$ The requirements for a given year to be a leap year are:

$1)$ The year must be divisible by $4$

$2)$ If the year is a century year $(1700,1800,$ etc.$),$ the year must be evenly divisible by $400$; therefore, both $1700$ and $1800$ are not leap years

Some example leap years are $1600,1712,$ and $2016.$

Write a program that takes in a year and determines whether that year is a leap year.

Ex: If the input is:

$1712$

the output is:

$1712-$ leap year

Ex: If the input is:

$1913$

the output is:

$1913-$ not a leap year