Learn to Program with Small Basic

TRY IT OUT 18-10
Use the techniques you learned in the House That Jack Built example to write a
program that tells your favorite story. Don’t have one? Make one about an alien
rat trapped in a tower with nothing but JELL-O, a slingshot, and an advanced
chemistry set. Explain how the rat got there and how it escapes!
Programming Challenges
If you get stuck, check out http://nostarch.com/smallbasic/ for the solutions
and for more resources and review questions for teachers and students.
1. Open the file Shoot_Incomplete.sb from this chapter’s folder. Run the program
to see the following interface.
The goal of this game is to estimate the turn angle and moving
distance between the turtle and the target. When a player enters their
input, it is saved in a variable named strIn. Your task is to split strIn into
two parts: assign the substring before the comma to angle, and assign
the substring after the comma to dist. The comments in the file tell you
where to add your code. If you get stuck, see the file Shoot.sb, which contains
the completed program.
2. Open the file BinaryToDecimal_Incomplete.sb from this chapter’s folder.
This program converts binary numbers to decimal numbers and then
asks the user to input an 8-bit binary number. It then shows the input
number in the graphics window, computes its decimal number, and displays
the result of the conversion, as shown in the following figure.
284 Chapter 18