You are to write a program in which a number is stored in an **IntegerSign** object. You can then ask this object if the number is zero, positive, or negative. The corresponding UML diagram looks like this:

Hints:

- Zero is considered positive.

- Use if/**else** statements for some of your tests but if you're feeling adventurous you can try the conditional operator

Integer Sign + signedInteger: int IntegerSign(numberToStore: int) isNegative(): boolean is Positive(): boolean isZero(): boolean