User Manual

218
Chapter 16: Programming
16PROG.DOC TI-86, Chap 16, US English Bob Fedorisko Revised: 02/13/01 2:36 PM Printed: 02/13/01 3:04 PM Page 218 of 1616PROG.DOC TI-86, Chap 16, US English Bob Fedorisko Revised: 02/13/01 2:36 PM Printed: 02/13/01 3:04 PM Page 218 of 1616PROG.DOC TI-86, Chap 16, US English Bob Fedorisko Revised: 02/13/01 2:36 PM Printed: 02/13/01 3:04 PM Page 218 of 16
The PRGM CTL Menu
8 '
programName
b )
PAGE
$
PAGE
#
I
à
O CTL INSc
If Then Else For End
4
While Repea Menu Lbl Goto
4
IS> DS< Pause Retur Stop
4
DelVa GrStl LCust
To see examples that show how to use
PRGM CTL
menu items in programs, refer to the A to
Z Reference.
If
condition
If
condition
is false (evaluates to 0), the next program command is
skipped; if
condition
is true (evaluates to a nonzero value), the
program continues on to the next command
Then
Following
If
, executes a group of commands if
condition
is true
Else
Following
If
and
Then
, executes a group of commands if
condition
is false
For(
variable
,
begin
,
end
ã
,
stepä
)
Starting at
begin
, repeats a group of commands by an optional real
step
until
variable
>
end
; default
step
is 1
End
Identifies the end of a group of program commands;
For(
,
While
,
Repeat
, and
Else
groups must end with
End
;
Then
groups without an
associated
Else
instruction also must end with
End
While
condition
Repeats a group of commands while
condition
is true;
condition
is
tested when the
While
instruction is encountered; typically, the
expression that defines
condition
is a relational test (Chapter 3)
Repeat
condition
Repeats a group of commands until
condition
is true;
condition
is
If , While , and Repeat
instructions can be nested.
For( loops can be nested.