UniBasic Commands Reference - Rocket Software

LOOP/REPEAT
Syntax
LOOP
[statements]
[UNTIL expr [DO]
statements]
[WHILE expr [DO]
statements]
REPEAT
LOOP {WHILE | UNTIL} expr DO
statements
REPEAT
LOOP
statements
{WHILE | UNTIL} expr DO REPEAT
Description
The UniBasic LOOP/REPEAT command repeats any contained statements while or
until a specified condition is met, depending on whether you use the WHILE or
UNTIL clause. statements can precede and/or follow the test condition. If space
permits, you can write the structure on one line. Otherwise, you can extend the
structure on as many lines as necessary. REPEAT is required and finishes the LOOP
operation.
UniData executes the first set of statements on the first entry into the loop, and then
evaluates the WHILE or UNTIL clause. If expr is true (using the WHILE keyword)
or false (using the UNTIL keyword), UniData executes the second set of statements.
If you have statements after a WHILE or UNTIL clause, the DO clause is required.
Otherwise, it is optional. When the program execution reaches REPEAT, it returns to
the first set of statements.
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