# Scala program to get the natural logarithm of a Double number using scala.math.log() function

Here, we are going to learn how to get the natural logarithm of a Double number using scala.math.log() function in Scala programming language?
Submitted by Nidhi, on May 03, 2021 [Last updated : March 11, 2023]

## scala.math.log() Function Example

Here, we will read a double number from the user and get the natural logarithm value using the scala.math.log() function and print the result on the console screen.

## Scala code to get the natural logarithm of a Double number

The source code to get the natural logarithm of a Double number is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

```// Scala program to get the natural logarithm of a
// Double value using scala.math.log() function

object Sample{
def main(args:Array[String]){
var num:Double    = 0;
var res:Double = 0;

print("Enter number: ")

res= scala.math.log(num)
println("Natural logarithm is: "+res);
}
}
```

## Output

```Enter number: 23.4
Natural logarithm is: 3.152736022363656
```

## Explanation

In the above program, we used an object-oriented approach to create the program. Here, we created an object Sample. We defined main() function. The main() function is the entry point for the program.

In the main() function, we created two variables num, res that are initialized with 0. Then we read the value of the num variable from the user and then we got the natural logarithm value using the scala.math.log() function and printed the result on the console screen.

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