Ti-83 Programming Tutorials

Chapter 6 - Beginner Projects

How does this section works?
Programs of the type math, game, or miscellaneous will be shown here with an explanation of the code. It is recommended that you try the exercises. We will also (try to) provide code for the user exercises so you can compare our code with your own.

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Math

Geometry problem solver program
Program name: GEOSOLVE
Lbl 1
ClrHome
Menu("AREA SOLVER","RECTANGLE",2,"CIRCLE",3,"ABOUT",A,"QUIT",X)
Lbl A
Disp "THIS PROGRAM","SOLVES AREAS OF","VARIOUS SHAPES."
Pause "-Made by Me"
Goto 1
Lbl X
Stop
Lbl 2
Disp "-RECTANGLE-"
Input "WIDTH:",A
Input "HEIGHT:",B
Disp "AREA IS:",A*B
Pause
Goto 1
Lbl 3
Disp "-CIRCLE-"
Input "RADIUS:",A
Disp "AREA IS:",pi*A^2
Pause
Goto 1

Notes: Use the pi symbol ([2nd] pi -- located on the caret button); when multiplying variables with other variables or numbers, you may omit the multiplication symbol (*); you can substitute the caret and 2 in A^2 with the actual squaring function.

User: Implement an option to "show your work"; implement code to solve for the area of a triangle, or other shapes if you prefer.

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Game

Number guessing program
Program name: RANDFUN
ClrHome
RandInt(1,50)->A
Disp "GUESS A NUMBER","FROM 1 to 50."
Repeat A=B
Input "GUESS:",B
"HIGH"
IF B<A
"LOW"
IF A!=B
Disp "TOO "+Ans
End
Pause "YOU GOT IT!"

Notes: != is the same as the 'Not Equals' sign. (located under [2nd] TEST)

User: Make a game that rolls a pair of dice.

• Have the user guess if the next roll will be a higher or lower number; give points!
• Keep score and/or a high scores list

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Miscellaneous

Bouncing text: a program that makes a string bounce around the screen.
Program name: FUNTEXT
ClrHome
"HELLO."->Str0
"      "->Str1
Repeat Ans
For(X,1,8,1)
Output(X,1,Str0)
For(Z,0,50,1)
End
Output(X,1,Str1)
End
For(X,7,2,-1)
Output(X,1,Str0)
For(Z,0,50,1)
End
Output(X,1,Str1)
End
getKey
End

User: Implement code to let the user enter their own message.

• Make sure to implement code to check if the size of the string is too long!
• Implement code to make the string bounce off horizontally or diagonally, also.