Texas Instruments TI-89 Voyage 200, User Manual

Page: 610 / 1008

Programming 610
Because a
Goto
command is unconditional (it always branches to the specified label), it
is often used with an
If
command so that you can specify a conditional test. For example:
Ê
If x>5, branches directly to label GT5.
Ë
For this example, the program must include commands (such as Stop ) that prevent Lbl GT5
from being executed if x
{
5.
Using Loops to Repeat a Group of Commands Using Loops to Repeat a Group of Commands Using Loops to Repeat a Group of Commands 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
F2 Control Toolbar Menu F2 Control Toolbar Menu
F2 Control Toolbar Menu
Ê
Ë
: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.