Using loops to repeat a group of commands – Texas Instruments TITANIUM TI-89 User Manual

Page 610

Programming

610

Because a

Goto

command is unconditional (it always branches to the specified label), it

is often used with an

command so that you can specify a conditional test. For example:

If x>5, branches directly to label GT5.

For this example, the program must include commands (such as Stop) that prevent Lbl GT5

from being executed if x

{

Using Loops to Repeat a Group of Commands

To repeat the same group of commands successively, use a loop. Several types of loops
are available. Each type gives you a different way to exit the loop, based on a conditional
test.

F2 Control Toolbar Menu

:If x>5

: Goto GT5

:Disp x

:--------

:Lbl GT5

:Disp "The number was > 5”

To enter most of the loop-related commands,
use the Program Editor’s

„

Control

toolbar

menu.