DO-UNTIL
Repeatedly execute a statement
WTSupported in traditional Synergy on Windows
|
WNSupported in Synergy .NET on Windows
|
USupported on UNIX
|
VSupported on OpenVMS
|
DO statement UNTIL condition
Arguments
statement
A single or compound statement to be repeatedly executed.
condition
An expression that controls whether statement is executed again.
Discussion
The DO-UNTIL statement executes a statement repeatedly until a specified condition is true. After each execution of the specified statement, the condition is evaluated. If condition evaluates to false, statement is executed again. If condition evaluates to true, statement is not executed again, and control is transferred to the statement following the DO-UNTIL statement.
DO, statement, and UNTIL can be on separate logical lines.
Examples
The following example stores 10 times the index value of each element into the first ten elements of a (for example, a(6) = 60).
record i ,d2 a ,10d4 proc clear i do begin incr i a(i) = i * 10 end until (i .ge. 10) end