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# What is cbrt() in Swift?

harris910

The cbrt() function in Swift returns the cube root of a number.

Here is the mathematical representation of the cbrt() function:

Figure 1: Mathematical representation of the cbrt() function

### Syntax

cbrt(number)

### Parameter

cbrt() requires a number as a parameter.

### Return value

cbrt() returns the cube root of the number sent as a parameter.

### Code example

The following example shows how to use cbrt() in Swift.

import Swift
import Foundation
//Perfect cube root
print ("The value of cbrt(8.0) : ", cbrt(8.0));

print ("The value of cbrt(0.0) : ",cbrt(0.0));

print ("The value of cbrt(27.0) : ",cbrt(27.0));

//Non-perfect cube root
print ("The value of cbrt(4.4) : ",cbrt(4.4));

//Negative number
print ("The value of cbrt(-4.5) : ",cbrt(-4.5));

### Explanation

• Line 2: We add the Foundation header required for cbrt() function.
• Lines 4–8: We calculate the cube root value of perfect cube numbers 8, 0, and 27 using cbrt().
• Line 11: We calculate the cube root value of the non-perfect cube number 4.4 using cbrt().
• Line 14: We calculate the cube root value of the negative number -4.5 using cbrt().

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