Texas Instruments Titanium TI-89 User Manual

Programming 599
For example:
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Local variable m is not assigned an initial value.
In the example above, the local variable m exists independently of any variable m that
exists outside of the function.
You Must Initialize Local Variables
You Must Initialize Local VariablesYou Must Initialize Local Variables
You Must Initialize Local Variables
All local variables must be assigned an initial value before they are referenced.
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1 is stored as the initial value for m.
The calculator cannot use a local variable to perform symbolic calculations.
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Define fact(n)=Func:
Local m:
While n>1:
n†m!m: n–1!n:
EndWhile:
Return m:
EndFunc
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Define fact(n)=Func:
Local m: 1!m:
While n>1:
nùm!m: n–1!n:
EndWhile:
Return m:
EndFunc

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)