Texas Instruments TI-89 사용자 설명서

Programming

 594

Folder Variables Variables that are stored in a particular folder.

•

If you store to a variable name only, it is stored in the 
current folder. For example:
5

!

start

•

If you refer to a variable name only, that variable must 
be in the current folder. Otherwise, it cannot be found 
(even if the variable exists in a different folder).

•

To store or refer to a variable in another folder, you must 
specify a path name. For example:

5

!

class\start 

(class = Variable name; start = Folder Name)

After the program stops, any folder variables created by 
the program still exist and still take up memory.

Local Variables

Temporary variables that exist only while a program is 
running. When the program stops, local variables are 
deleted automatically.

•

To create a local variable in a program, use the 

 

command to declare the variable.

•

A local variable is treated as unique even if there is an 
existing folder variable with the same name.

•

Local variables are ideal for temporarily storing values 
that you do not want to save.