To get the square root of a number in Scala, you can use the scala.math.sqrt() function. This function returns the positive square root of a given number.
Here is an example code snippet:
val num = 25
val sqrtNum = scala.math.sqrt(num)
println(sqrtNum) // Output: 5.0
In this example, we start by defining the variable num with a value of 25. Then, we use the scala.math.sqrt() function to find the square root of num and assign it to the variable sqrtNum. Finally, we print the value of sqrtNum which is 5.0.
You can also calculate the square root of a user input by first reading the input using the scala.io.StdIn package. Here is an example code snippet:
import scala.io.StdIn
println("Enter a number: ")
val num = StdIn.readDouble()
val sqrtNum = scala.math.sqrt(num)
println("The square root of " + num + " is " + sqrtNum)
In this example, we first import the scala.io.StdIn package to read user input. Then, we prompt the user to enter a number using the println() function. We read the input using the readDouble() function and assign it to the variable num. We then calculate the square root of num using the scala.math.sqrt() function and assign it to the variable sqrtNum. Finally, we print a message that tells the user what number was entered and what its square root is.