Working with the instructor, complete the following programming exercises.

Write a program that requests an integer from the user and prints whether the integer is positive or negative or zero.

A year with $366$ days is called a leap year. Leap years are necessary to keep the calendar in synch with the sun, because the earth revolves around the sun once very $365\mathrm{.}25$ days. As a result, years that are divisible by $4,$ like $1996,$ are leap years. However, years that are divisible by $100,$ like $1900,$ are not leap years. But years that are divisible by $400,$ like $2000,$ are leap years. Write a program that asks the user for a year and computes whether that year is a leap year.

Write a program that prompts the user to enter a number in the range $1$ through $10.$ The program should display the Roman numeral version of that number. If the number is outside the range of $1$ to $10,$ the program should display an error message. The table below shows the Roman numerals for the numbers $1$ through $10.$

Number Roman Numeral

$1$ I

$2$ II

$3$ III

$4$ IV

$5$ V

$6$ VI

$7$ VII

$8$ VIII

$9$ IX

$10$ X