chapter 5 exercise 4
chapter 5 exercise 6
chapter 5 exercise 1 add spaces
chapter 5 exercise 7 and 8
chapter 5 exercise 7 plain parameter
chapter 5 add exercise 10 and comment exercise 7
chapter 5 correction of exercises
chapter 5 exercise 8 and hello world
chapter 6 exercise 1
chapter 6 exercise 1 and 2
chapter 6 exercise 5
chapter 6 exercise 6
chapter 6 exercise 7
chapter 6 exercise 6 and 8
chapter 6 exercise 4
chapter 6 exercise 4 add getCoordinates function
chapter 6 exercise 6 and 7 add types