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Swift program to find the natural logarithm of a given number

Here, we are going to learn how to find the natural logarithm of a given number in Swift programming language?
Submitted by Nidhi, on June 23, 2021

Problem Solution:

Here, we will use the log() function to find the natural logarithmic value of a specified number and print the result on the console screen.

Program/Source Code:

The source code to find the natural logarithm of a given number is given below. The given program is compiled and executed successfully.

// Swift program to find the natural logarithm 
// of a given number

import Swift
import Foundation

var num:Double =  5.0
var res:Double =  0.0

res = log(num)

print("Result: ",res)

Output:

Result:  1.6094379124341003

...Program finished with exit code 0
Press ENTER to exit console.

Explanation:

In the above program, we imported a package Swift to use the print() function using the below statement,

import Swift;

To use mathematics and some standard functions, we need to import the foundation package using the below statement,

import Foundation;

Here, we created two double type variables num, res that are initialized with 5.0,0.0 respectively. Then we found the natural logarithm using the log10() function of a given number and printed the result on the console screen.

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