Exercises

@main
def read(): Unit = 
  val scanner = new Scanner(System.in)
  print("read: ")
  val s = scanner.nextLine
  println("write: " + s)

Exercise 1 Begin

Create new project.
Create a @main function
Add the code and run

Exercise 2 Welcome

Ask for a user name
Print a welcome message with the name: Hello, [name]

Exercise 3 Add

Ask the user for two numbers n1 and n2
Add and print the numbers
Hint: use readInt()
Next divide the numbers What do you see. Is this OK?
Read a Double Hint use toDouble()

Create een choice menu with the next layout

Menu Choose

(1) - print hello
(2) - print bye

Your choice:    1
hello

Exercise 5 Calculator

Create a calculator that can add, subtract, multiply and divide
Use the next layout

Calculator

Give the first number: 3
Give the second number: 4
Give the operator: *
3 * 4 = 12

Exercise 6 Drawing

We will use nested for-loops to draw shapes.

for i <- 0 to 3 do
  for j <- 0 to 3 do
    print("* ")
    println()
println()

An example of a rectangle

Draw the next shapes

*
* *
* * *  
* * * * 

* * * * 
* * *  
* *
*

* * * * 
  * * *  
    * * 
      *  

*
  *
    *
      *

Exercise 7 List

Create list in the range from 0 to 10
Print de list with a for-loop

var list = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

Reverse and print the list
Add all the values
Calculate the average value

Exercise 8 String

Ask the user to give a text string

Calculate the length of the text.
Split de text in words Hint use: split
How many words are in the tekst.

Exercise 9 Function

Write a function that add two numbers.
Write function log(text: String) print the date and the text.

Scala Workbook