#      
## Overview
The **`ceil()` function** in Swift returns the nearest smallest integer value greater than or equal to a number.

The figure below shows the mathematical representation of the `ceil()` function:

>**Note:** We need to import **`Foundation`** in our code to use the `ceil()` function. We can import it using `import Foundation`.

# 
#  Syntax
---
```swift
ceil(number)
```
---

# 
#  Parameter

This function requires a `number` as a parameter.

##
## Return value

`ceil()` returns the nearest, smallest integer value greater than or equal to a number sent as a parameter.

##
## Example
The code below shows the use of the `ceil()` function in Swift:

import Swift
//Header for function
import Foundation

//Integer
print ("The value of ceil(4.0) : ",ceil(4.0));

//Positive double value
print ("The value of ceil(2.56) : ",ceil(2.56));

//Negative double value
print ("The value of ceil(-2.56) : ",ceil(-2.56));

## Explanation

-  **Line 3**: We add the `Foundation` header required for the `ceil()` function.

-  **Line 6**: We calculate the ceiling of the integer value using `ceil()`.

-  **Line 9**: We calculate the ceiling of the positive double value using `ceil()`.

-  **Line 12**: We calculate the ceiling of the negative double value using `ceil()`.


What is the ceil() function in Swift?

The ceil() function in Swift returns the nearest smallest integer greater than or equal to a given number.