Hello! I'm using Mozart Oz and I'm trying to answer this question:   Write a function Abs that computes the absolute value of a number. This should work for both integers and real numbers. For example, {Abs ~2} should return 2, {Abs ~2.5} should return 2.5, and {Abs 7} should return 7.   I feel I'm making multiple syntax errors, though I figured I'd ask for some help. Again, the language is Oz. Thank you!

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Hello! I'm using Mozart Oz and I'm trying to answer this question:

 

Write a function Abs that computes the absolute value of a number. This should work for both integers and real numbers. For example, {Abs ~2} should return 2, {Abs ~2.5} should return 2.5, and {Abs 7} should return 7.

 

I feel I'm making multiple syntax errors, though I figured I'd ask for some help. Again, the language is Oz. Thank you!

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Hello and thank you for taking the time to help with this question! You were right in that I was missing brackets and the nested if statement wasn't there. I had it separate and that was an issue. However, when I run this code, "variable IsReal" and "ariable IsInteger" not introduced. What am I missing? Thank you!

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