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	<pre>		<pre>
	Process loops()		Process loops()
		+	Private
		+	var1 = 999;
		+	var2 = 999;
		+	var3 = 999;
		+	var4 = 999;
	Begin		Begin
-		+	var1 = 0;
		+	while(var1 <= 10)
		+	var1++; //this statement will be processed 10 times
		+	end
		+	var2 = 0;
		+	repeat
		+	var2++; //this does exactly the same but the check is at the end of the loop, thus this loop will be processed at least once!
		+	until(var2 > 10)
		+	for(var3 = 0;var3 <= 10;var3++)
		+	//this does exactly the same as the while loop but you control the incremention in the header of the loop which makes it more readable
		+	end
		+	from var4 = 0 to 10 step 1
		+	//this does exactly the same as the while and the for loop. The '''step 1''' is optional
		+	end
		+	loop
		+	frame; //the frame statement will be processed forever
		+	end
	End		End
	</pre>		</pre>

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Revision as of 15:25, 1 May 2007

Definition

LOOP

Loop is a reserved word used to create iterations in your code. The terminator for a loop is end. the statements between these words will get repeated indefinately. There are several types of loops:

• the normal loop
• while loop (terminator: end)
• repeat loop (terminator: until)
• for loop (terminator: end)
• from loop (terminator: end)

Example

Process loops()
Private
    var1 = 999;
    var2 = 999;
    var3 = 999;
    var4 = 999;
Begin
    var1 = 0;
    while(var1 <= 10)
        var1++; //this statement will be processed 10 times
    end
    var2 = 0;
    repeat
        var2++; //this does exactly the same but the check is at the end of the loop, thus this loop will be processed at least once!
    until(var2 > 10)
    for(var3 = 0;var3 <= 10;var3++)
        //this does exactly the same as the while loop but you control the incremention in the header of the loop which makes it more readable
    end
    from var4 = 0 to 10 step 1
       //this does exactly the same as the while and the for loop. The '''step 1''' is optional
    end
    loop
        frame; //the frame statement will be processed forever
    end
End