Texas Instruments TI-84 - Manual (Page 443)

Chapter 16: Programming 440
While While While While
While performs a group of commands while condition is true. condition is frequently a
relational test (Chapter 2). condition is tested when While is encountered. If condition is true
(nonzero), the program executes a group of commands . End signifies the end of the group.
When condition is false (zero), the program executes each command following End . While
instructions can be nested.
:While condition
:command (while condition is true)
:command (while condition is true)
:End
:command
Repeat Repeat Repeat Repeat
Repeat repeats a group of commands until condition is true (nonzero). It is similar to While ,
but condition is tested when End is encountered; therefore, the group of commands is
always executed at least once. Repeat instructions can be nested.
:Repeat condition
:command (until condition is true)
Program Output