Repeat
Statement1;
{Statement2;
...}
Until Expression
Description
The Repeat keyword starts a control loop that is always executed at least once, and which terminates when the Expression is satisfied (returns True).
There is no need for Begin or End markers - the Repeat and Until keywords serve that purpose.
It is used when it is important that the statements are at least executed once.
Notes
The last Statement need not have a ; terminator - it is entirely optional.
Related commands
Begin Keyword that starts a statement block
Boolean Allows just True and False values
Do Defines the start of some controlled action
End Keyword that terminates statement blocks
For Starts a loop that executes a finite number of times
Until Ends a Repeat control loop
While Repeat statements whilst a continuation condition is met
Example code : Display integer squares until we reach or exceed 100
var
num, sqrNum : Integer;
begin
num := 1;
sqrNum := num * num;
// Display squares of integers until we reach 100 in value
Repeat
// Show the square of num
ShowMessage(IntToStr(num)+' squared = '+IntToStr(sqrNum));
// Increment the number
Inc(num);
// Square the number
sqrNum := num * num;
until sqrNum > 100;
end;
Show full unit code
1 squared = 1
2 squared = 4
3 squared = 9
4 squared = 16
5 squared = 25
6 squared = 36
7 squared = 49
8 squared = 64
9 squared = 81
10 squared = 100