# 
## Overview
The **`abs()` function** returns the absolute value of a number. The mathematical representation of `abs` function is as follows:

$$abs(X) =  \mid X \mid$$

# Syntax
```swift
abs(num)
```
**`num`** is the number whose absolute value is required.

## Parameter
The `abs()` function takes a number as a parameter. 

## Return value
The `abs()` function returns the absolute value of a number passed as a parameter.  

## Example
The following code shows the use of the `abs()` function in Swift:




import Swift

//positive number 
print ("The value of abs(10) : ",abs(10));

//zero 
print ("The value of abs(0) : ",abs(0));

//negative number 
print ("The value of abs(-10) : ",abs(-10));

## Explanation

* **Line 4**: We calculate the absolute value of the positive number `10` using `abs()`.

* **Line 7**: We calculate the absolute value of `0` using `abs()`.

* **Line 10**: We calculate the absolute value of the negative number `-10` using `abs()`.

What is abs() in Swift?

Returns the absolute value of a number in Swift using the abs() function with given syntax and example.