Alphabetagamma

Hello, all...

This is my lonely little user page. I think I'll fill it up with programs for the TI 83+ SE...

I ACCEPT NO LIABILITY FOR ANY ADVERSE OCCURRENCES THAT COME FROM THIS PAGE, DIRECTLY OR INDIRECTLY, WHATSOEVER!

Notes: I use a ## for the "not equal to" symbol. I use CURT(X) for the cube root of X. I use SQRT(X) for the square root of X. Some of these programs refer to a "prgmALLPREFD". This is just a program that sets the calculator to my prefered settings. Don't worry about it.

CONVERT, the unit conversion program

Author: Lucas Brown of Poway, California.

:Menu("CHOOSE SOMETHING","TO METRIC",1,"TO AMERICAN",2,"QUIT",3)
:Lbl 1
:Input A
:Goto 4
:Lbl 2
:Goto 5
:Lbl 3
:prgmALLPREFD
:Lbl 4
:Menu("AMERICAN>METRIC","INCHES>CM",A,"MILES>KM",B,"FEET>METERS",C,"°F>°C",D,"OUNCES>GRAMS", E,"POUNDS>KG",F,"VOLUME",G)
:Lbl A
:Disp A*2.54
:Stop
:Lbl B
:Disp A*254*6336/(106
:Stop
:Lbl C
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The Cubic Formula

Author: Lucas Brown of Poway, California.

PROGRAM:CUBEFORM

:ClrHome
:Disp "AX^3+BX^2+CX+D=0"
:Prompt A
:Prompt B
:Prompt C
:Prompt D
:D/A==>D
:C/A==>C
:B/A==>B
:1==>A
:(BC/6-B^3/27-D/2)==>E
:(CURT(E+SQRT(E^2+(C/3-B^2/9)^3))+CURT(E-SQRT(E^2+(C/3-B^2/81)^3))-B/3)==>F
:ClrHome
:Disp "ONE SOLUTION IS:",F

FACTOR

Author: Lucas Brown of Poway, California.

PROGRAM:FACTOR

:ClrHome
:Input A
:If A>10^11:Disp "ERR: NUMBER TOO":Disp "LARGE.RTRNS WILL":Disp "BE ERRONEOUS.":Stop
:Disp A
:DelVar B
:Lbl C
:B+1==>B
:If B>SQRT(A)
:Then
:0==>B
:Disp "THAT'S ALL":Stop
:End
:If (A/B)=int(A/B)
:Then
:Disp "":Disp B,(A/B):Pause:Goto C
:Else
:Goto C
:End

PRIMEFAC, the prime factorization program

Author: ? of ?, California

:ClrHome
:DelVar L1
:Input A
:2→B
:1→C
:While A>1
:Output(2,1,B)
:If A/B=int(A/B)
:Then
:B→L1(C)
:C+1→C
:A/B→A
:Else
:B+1→B
:End
:If B-1>SQRT(A)
:Then
:A→L1(C)
:Stop
:End
:End

The Quadratic formula

Author: Lucas Brown of Poway, California.

:PROGRAM:QUADFORM
:
:ClrHome
:Disp "AX2+BX+C=0
:Prompt A
:Prompt B
:Prompt C
:C/A→C
:B/A→B
:1→A
:-B+SQRT(B2-4AC)/(2A)→D
:-B-SQRT(B2-4AC)/(2A)→E
:If D=E
:Then
:Disp "DOUBLE ROOT AT",D
:Else
:Disp "ROOTS:",D,E
:End

A version of the game "Snake"

Author: Lucas Brown of Poway, California.

You are the head of the snake. Eat the dot that appears somewhere onscreen. Avoid yourself, the score, and the walls.

PROGRAM:SNAKE

:Full
:RectGC
:CoordOff
:GridOff
:AxesOff
:LabelOff
:ExprOff
:ZDecimal
:ClrDraw
:Line(-4.7,3.1,4.7,3.1)
:Line(4.7,3.1,4.7,-3.1)
:Line(4.7,-3.1,-4.7,-3.1)
:Line(-4.7,-3.1,-4.7,3.1)
:26==>L
:0==>S
:5==>X
:5==>Y
:Lbl SE
:randInt(5,55)==>A
:randInt(5,90)==>B
:If pxl-Test(A,B)=1:Goto SE
:Pxl-On(A,B)
:Lbl ST
:Pxl-On(X,Y)
:S+1==>S
:0==>K
:getKey==>K
:If K##0:K==>L
:If L=24:Y-1==>Y
:If L=25:X-1==>X
:If L=26:Y+1==>Y
:If L=34:X+1==>X
:Text(55,2,S)
:If X=A and Y=B
:Then
:S+int(100*(S^(1/3)))==>S
:Goto SE
:End
:If pxl-Test(X,Y)=1:Goto ED
:Goto ST
:Lbl ED
:Disp "GAME OVER",S
:Pause
:prgmALLPREFD

A maze game

Author: Lucas Brown of Poway, California.

You are the blinking dot that starts out in the middle of the screen. Control with the arrow keys. Avoid the walls. Avoid the score. Get to the top or the left walls.

PROGRAM:MAZE

:Full
:RectGC
:CoordOff
:GridOff
:AxesOff
:LabelOff
:ExprOff
:ZDecimal
:ClrDraw
:Line(-4.7,3.1,4.7,3.1)
:Line(4.7,3.1,4.7,-3.1)
:Line(4.7,-3.1,-4.7,-3.1)
:Line(-4.7,-3.1,-4.7,3.1)
:0==>S
:31==>x
:47==>Y
:Lbl SE
:S+1==>S
:randInt(11,53)==>A
:randInt(11,85)==>B
:If A=X or B=Y:Goto SE
:randInt(0,1)==>C
:If C=0
:Then
:Pxl-On(A-5,B):Pxl-On(A-4,B):Pxl-On(A-3,B):Pxl-On(A-2,B):Pxl-On(A-1,B):Pxl-On(A,B)
:Pxl-On(A+1,B):Pxl-On(A+2,B):Pxl-On(A+3,B):Pxl-On(A+4,B):Pxl-On(A+5,B)
:End
:If C=1
:Then
:Pxl-On(A,B-5):Pxl-On(A,B-4):Pxl-On(A,B-3):Pxl-On(A,B-2):Pxl-On(A,B-1):Pxl-On(A,B)
:Pxl-On(A,B+1):Pxl-On(A,B+2):Pxl-On(A,B+3):Pxl-On(A,B+4):Pxl-On(A,B+5)
:End
:If S=100
:Then
:0==>s
:Goto ST
:End
:Goto SE
:0==>T
:Lbl ST
:Pxl-On(X,Y)
:S+1==>S
:Repeat K
:T+1==>T
:If T<35:Pxl-On(X,Y)
:If T>34:Pxl-Off(X,Y)
:If T=40:0==>T
:getKey==>K
:End
:K==>L:Pxl-Off(X,Y)
:If L=24:Y-1==>Y
:If L=25:X-1==>X
:If L=26:Y+1==>Y
:If L=34:X+1==>X
:Text(55,2,S)
:If X=(0 or 61) or Y=(0 or 93):Goto EE
:If pxl-Test(X,Y)=1:Goto ED
:Goto ST
:Lbl ED
:Disp "GAME OVER",S
:Pause
:prgmALLPREFD
:Lbl EE
:Disp "YOU WON!",S
:Pause
:prgmALLPREFD