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Texas Instruments TITANIUM TI-89 User Manual

Page 615

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Programming

615

Typically, the loop contains commands that let the program exit from the loop. Commonly
used commands are:

If

,

Exit

,

Goto

, and

Lbl

(label). For example:

Ê

An If command checks the condition.

Ë

Exits the loop and jumps to here when x increments to 6.

Note:

The

Exit

command exits from the current loop.

In this example, the

If

command can be anywhere in the loop.

The

If

command could also use a

Goto

command to transfer program control to a

specified

Lbl

(label) command.

К

Л

:0

!

x

:Loop

: Disp x

: x+1

!

x

: If x>5

: Exit

:EndLoop

:Disp x

When the If command is:

The loop is:

At the beginning of the loop

Executed only if the condition is true.

At the end of the loop

Executed at least once and repeated
only if the condition is true.