Learning Goals

use modulo and division operators

write a function that is then called in the main program

Introduction

A common year in the modern Gregorian Calendar consists of $365$ days. In reality, 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. Even though $1700$ and $1800$ are divisible by $4(1700/4=425$ and $1800/4=450),$ because they are century years $($i$.$e$.,$ divisible by $100),$ they need to be divisible by $400$ to be leap, but $1700/400=4\mathrm{.}25$ and $1800/4=4\mathrm{.}5).$

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

Instructions

Define the following function, which takes the year as an integer and returns the number of days in February $($also as an integer$)$ for the given input year.

def days$\_$in$\_$feb$($user$\_$year$)$

Your main program should take in a year, call the function and use its return value to output the number of days in February for that year.

Testing your code

If the input is:

$1712$

the function returns

$29$

the main program output is:

$1712$ has $29$ days in February.

Ex: If the input is:

$1913$

the function returns

$28$

the main program output is:

$1913$ has $28$ days in February.