Learn to Program with Small Basic

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2. Although the pizza in the previous exercise is very yummy, it’s not grammatically correct, because the program outputs 1 slices of pizza. Fix the program so that its output is grammatically correct (and you won’t embarrass your English teacher). (Hint: use an If statement inside the For loop.) 3. We built a game for you to quiz Alice on her multiplication so she’ll be ready for the queen’s questions. The program generates 10 random multiplication questions and asks Alice to enter the answer for each question. Alice earns one point for each correct answer. If she enters a wrong answer, show her the correct answer. The program ends by showing her total score. Re-create the program, run it, and explain how it works: score = 0 For N = 1 To 10 ' Asks 10 questions n1 = Math.GetRandomNumber(10) n2 = Math.GetRandomNumber(10) TextWindow.Write(n1 + " x " + n2 + "? ") ans = TextWindow.ReadNumber() If (ans = n1 * n2) Then ' Increases the score score = score + 1 Else ' Shows the correct answer TextWindow.WriteLine("Incorrect --> " + (n1 * n2)) EndIf EndFor TextWindow.WriteLine("Your score is: " + score + "/10") 4. Write a program that draws the following image. (Hint: use a For loop to draw the line pattern for each of the four corners.) Repeating For Loops 193
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Learn to Program with Small Basic A
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Learn to Program with Small Basic A
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Brief Contents Foreword by Vijaye R
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Exploring Other Features. .........
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7 Empowering Programs with math 83
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12 building Graphical User Interfac
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Storing Records. ..................
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Foreword Computer programming is ma
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Acknowledgments This book represent
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Introduction Have you ever wondered
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• In Chapter 11: Event-Driven Pro
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1 Introducing Small Basic Bill Gate
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BASIC language that would help kids
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Toolbar Help Area Editor Surface Fi
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Then click the New button to open a
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Helping Hands: IntelliSense and Syn
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Programming Challenges If you get s
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The Parts of a Program Let’s expl
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The method’s name and a brief des
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5 + 7 12 Here’s the output of thi
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For example, to make the TextWindow
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TRY IT OUT 2-3 Now you have a chanc
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Programming Errors Just because a p
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26 Chapter 2 4. Write a program tha
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In the system you use at school, po
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Drawing Shapes You can draw lots of
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Figure 3-6 shows what the output lo
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22 GraphicsWindow.BrushColor = "Lig
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DrawText() takes three arguments. T
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GraphicsWindow provides two methods
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6. Write a program that draws this
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4 Using Variables Have you ever wan
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Try changing the value in karenBear
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These two ways of updating the scor
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Figure 4-2: How a variable is added
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TRY IT OUT 4-3 Write a program that
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Two Kinds of Data Programs use all
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5 Drawing Shapes with Turtle Graphi
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Absolute Motion With absolute motio
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North 0 (360) 315 (-45) 45 (-315) W
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GraphicsWindow.PenColor = "Red" Gra
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The For loop runs Turtle.Move(60) a
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y 5). For the hexagon (the polygon
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Creating Polygon Art Using Nested L
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Endless Graphics In Listing 5-10 yo
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Write a program to have the turtle
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Talking to the Computer Until now,
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Figure 6-2: The text window waiting
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4 C = (5 / 9) * (F - 32) 5 C = Math
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9 noun = TextWindow.Read() 10 11 Te
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7 Empowering Programs with Math If
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Here’s a sample run of our progra
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Round() -4 -3.5 -3 0 3 3.5 4 Round(
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This code snippet shows you some ex
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Let’s walk through this program l
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Trigonometric Methods Trigonometric
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Programming Challenges If you get s
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Small Basic uses a few different wa
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You can test all sorts of condition
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Small Basic first finds the value o
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Your mom’s instructions assume th
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But wait, your mom just realized th
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This code asks the user to enter a
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9 Using Decisions to Make Games Som
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Condition 1 True Statement set 1 If
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This change to the program means th
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Door 1 Door 2 Door 3 Figure 9-6: Pe
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Listing 9-4 shows an example of usi
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Think of the Shapes object as a “
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Background image (Grid.png) Star.pn
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In Figure 9-8, you see that the gri
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This code asks the player to enter
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10 Solving Problems with Subroutine
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Gulliver later learned that 1 glum-
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TRY IT OUT 10-1 When Gulliver asked
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variables that belong to the main p
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4 TextWindow.WriteLine("Your turn.
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1 step away). If the arrow hits the
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Then you set the graphics window’
Page 168 and 169: 24 Shapes.SetText(msgText, "") 25 T
Page 170 and 171: Step 8: Shoot Arrows with ShootArro
Page 172 and 173: Lines 3-7 animate the dragon’s fi
Page 174 and 175: 11 Event-Driven Programming So far,
Page 176 and 177: GraphicsWindow Events Let’s start
Page 178 and 179: 4 5 Sub OnKeyDown 6 GraphicsWindow.
Page 180 and 181: 13 Else 14 GraphicsWindow.DrawText(
Page 182 and 183: Useful Tips Before moving on, we’
Page 184 and 185: 21 GraphicsWindow.BrushColor = "Red
Page 186 and 187: 4 XG = Math.GetRandomNumber(8) - 1
Page 188: Programming Challenges If you get s
Page 191 and 192: Today, most programs use a graphica
Page 193 and 194: located at (100, 100). By default,
Page 195 and 196: 9 GraphicsWindow.MouseMove = OnMous
Page 197 and 198: Let’s look at the computations. Y
Page 199 and 200: You start by loading the two backgr
Page 201 and 202: (line 8). If the total resistance i
Page 203 and 204: TRY IT OUT 12-4 Write a program to
Page 206 and 207: 13 Repeating For Loops Have you eve
Page 208 and 209: Each For loop starts with the keywo
Page 210 and 211: The program uses a variable named s
Page 212 and 213: TRY IT OUT 13-5 What does the follo
Page 214 and 215: Nested Loops The statements in the
Page 216 and 217: Figure 13-7: The output of Stamp.sb
Page 220 and 221: 14 Creating Conditional While Loops
Page 222 and 223: This piece of code simply says, “
Page 224 and 225: Tip Make sure you initialize any va
Page 226 and 227: Images P1, P2, and P3 show the play
Page 228 and 229: TIP If you want to find out the exa
Page 230: 2. Open the file SimpleSlot.sb from
Page 233 and 234: eferenced using a string index, suc
Page 235 and 236: This line of code adds five to the
Page 237 and 238: Constant Initialization The followi
Page 239 and 240: Here’s the output of this loop: a
Page 241 and 242: TRY IT OUT 15-4 Write a program tha
Page 243 and 244: 3 ans[2] = "It is decidedly so. By
Page 245 and 246: 20 numMissed = 0 ' Missed apples 21
Page 247 and 248: 7 CheckCatch() ' Checks if the appl
Page 249 and 250: and bounces to the left or to the r
Page 252 and 253: 16 Storing Data with Associative Ar
Page 254 and 255: Let’s look at some sample runs of
Page 256 and 257: TRY IT OUT 16-1 What’s the output
Page 258 and 259: This code uses the Array object’s
Page 260 and 261: 6 For N = 1 To Array.GetItemCount(n
Page 262 and 263: Step 2: Set Up the Graphical User I
Page 264: TRY IT OUT 16-4 Run your poet progr
Page 267 and 268: The arrays you’ll make in this ch
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Following along with this figure, w
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To move the square, we call the Mov
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Going Interactive Let’s explore h
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Duckberg Industries December Sales
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TRY IT OUT 17-5 Donald wants to rev
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Forest Rain btnN btnE btnS btnW Flo
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8 ShowLocation() ' Gives feedback t
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Step 6: Show the Player’s Locatio
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We mentioned that the old compass h
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18 Advanced Text Magic Although pic
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Earlier in the book, you learned ho
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The GetSubText() Method To extract
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3 lwrCase = Text.ConvertToLowerCase
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a: 97 b: 98 1: 49 2: 50 Fancy Chara
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Armed with the knowledge you’ve g
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sixth digits, and so on. If any two
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TRY IT OUT 18-7 Write a program tha
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Listing 18-9 shows the main part of
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Page1 This is the House that Jack b
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Lines 2-8 set up the GraphicsWindow
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Complete the GetInput() subroutine,
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In most programming languages, work
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The filesystem has a tree structure
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5 TextWindow.WriteLine(str) 6 TextW
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output file (line 16). If the file
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When you run this program, it creat
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To keep the code simple, we didn’
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WARNING When you call DeleteDirecto
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We automatically load the contents
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16 TextWindow.WriteLine("The game w
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2. Write a science quiz that tests
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Review Questions Test your knowledg
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C CaptainCork_ Incomplete.sb, 109 c
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Format Program, 99 FrenchDay.sb, 23
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MovingWord.sb, 184 .mp3 files, 289
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Small Basic, continued integrated d
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Updates Visit http://nostarch.com/s
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Learn to Program with Small Basic

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