Texas Instruments Titanium TI-89 User Manual

Programming 607
If Command
If CommandIf Command
If Command
To execute only one command if a conditional test is true, use the general form:
Ê
Executed only if x>5; otherwise, skipped.
Ë Always displays the value of x.
In this example, you must store a value to x before executing the If command.
Note: Use indentation to make your programs easier to read and understand.
If...Then...EndIf Structures
If...Then...EndIf StructuresIf...Then...EndIf Structures
If...Then...EndIf Structures
To execute one group of commands if a conditional test is true, use the structure:
Ê
Executed only if x>5.
Ë Displays value of:
• 2x if x>5
•x if x
{5
Ê
Ë
:If x>5
: Disp "x is greater than 5"
:Disp x
Ê
Ê
Ë
:If x>5 Then
: Disp "x is greater than 5"
: 2†x!x
:EndIf
:Disp x

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)