pascal repeat until loop

In Pascal, the repeat until loop is a control structure that allows you to repeatedly execute a block of code until a certain condition is met. The basic syntax of the repeat until loop in Pascal is as follows:

repeat
  // code to be executed
until condition;

The code inside the loop will be executed at least once before the condition is checked. If the condition is true, the loop will terminate and the program will continue with the next statement after the loop. If the condition is false, the loop will repeat and the code inside the loop will be executed again.

Here's an example to illustrate the usage of the repeat until loop in Pascal:

program RepeatUntilExample;
var
  i: Integer;
begin
  i := 1;
  repeat
    writeln('Count: ', i);
    i := i + 1;
  until i > 5;
end.

In this example, the loop will execute the code inside the repeat block until the value of i becomes greater than 5. The output of this program will be:

Count: 1
Count: 2
Count: 3
Count: 4
Count: 5

After i becomes 6, the condition i > 5 becomes false, and the loop terminates.

That's the basic idea of using the repeat until loop in Pascal. It allows you to repeat a block of code until a certain condition is met.