TI -82 Manual Book page 185

While
While performs a group of commands while condition is true. condition is
frequently a relational test (Chapter 2). condition is tested when
encountered. If condition is true (nonzero), the program executes a group
of commands.
(zero), the program executes the commands following
instructions can be nested. (
:While condition
: command while condition is true
: command while condition is true
:End
: command
Repeat
Repeat repeats a group of commands until condition is true (nonzero). It is
similar to
group of commands will always be executed at least once.
instructions can be nested. (
:Repeat condition
: command until condition is true
: command until condition is true
:End
: command
End
identifies the end of a group of commands. Each
End
Else loop must have an
an associated
signifies the end of the group. If condition is false
End
While , but condition is tested when
End
. (
Else PRGM CTL
item
PRGM CTL 5
PRGM CTL item 6
at the "bottom," as must a
item )
7
End . While
)
End is encountered; thus the
Repeat
)
,
For While
Then loop without
Programming 13-9
While is
, , or
Repeat