Difference between revisions of "Infinite loop"
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An infinite loop (also known as an endless loop or unproductive loop or a continuous loop) is a loop which never ends. | An infinite loop (also known as an endless loop or unproductive loop or a continuous loop) is a loop which never ends. | ||
| − | Inside loop, | + | Inside loop, [[statement]]s are repeated forever. |
| − | <syntaxhighlight> | + | <syntaxhighlight lang="pascal"> |
while true do | while true do | ||
| Line 15: | Line 15: | ||
| − | <syntaxhighlight> | + | <syntaxhighlight lang="pascal"> |
repeat | repeat | ||
| Line 23: | Line 23: | ||
| − | == [[Break]] statement == | + | == [[Break|<syntaxhighlight lang="pascal" enclose="none">Break</syntaxhighlight>]] statement == |
| − | "[[While]] [[True]] [[Do]]" or "[[Repeat]] [[Until]] [[False]]" loops looks infinite at first glance, | + | "[[While|<syntaxhighlight lang="pascal" enclose="none">While</syntaxhighlight>]] [[True|<syntaxhighlight lang="pascal" enclose="none">true</syntaxhighlight>]] [[Do|<syntaxhighlight lang="pascal" enclose="none">do</syntaxhighlight>]]" or "[[Repeat|<syntaxhighlight lang="pascal" enclose="none">repeat</syntaxhighlight>]] [[Until|<syntaxhighlight lang="pascal" enclose="none">until</syntaxhighlight>]] [[False|<syntaxhighlight lang="pascal" enclose="none">false</syntaxhighlight>]]" loops looks infinite at first glance, |
| − | but there may be a way to escape the loop through | + | but there may be a way to escape the loop through <syntaxhighlight lang="pascal" enclose="none">break</syntaxhighlight>. |
| − | <syntaxhighlight> | + | <syntaxhighlight lang="pascal"> |
var | var | ||
| Line 44: | Line 44: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | <syntaxhighlight> | + | <syntaxhighlight lang="pascal"> |
var | var | ||
i:integer; | i:integer; | ||
| Line 59: | Line 59: | ||
== See also == | == See also == | ||
| − | * [[True]] | + | * [[True|<syntaxhighlight lang="pascal" enclose="none">true</syntaxhighlight>]] |
| − | * [[False]] | + | * [[False|<syntaxhighlight lang="pascal" enclose="none">false</syntaxhighlight>]] |
| − | * [[Repeat]] [[Until]] | + | * [[Repeat|<syntaxhighlight lang="pascal" enclose="none">repeat</syntaxhighlight>]] [[Until|<syntaxhighlight lang="pascal" enclose="none">until</syntaxhighlight>]] |
| − | * [[While]] [[Do]] | + | * [[While|<syntaxhighlight lang="pascal" enclose="none">while</syntaxhighlight>]] [[Do|<syntaxhighlight lang="pascal" enclose="none">do</syntaxhighlight>]] |
| − | * [[Break]] | + | * [[Break|<syntaxhighlight lang="pascal" enclose="none">break</syntaxhighlight>]] |
Revision as of 16:00, 1 July 2019
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An infinite loop (also known as an endless loop or unproductive loop or a continuous loop) is a loop which never ends. Inside loop, statements are repeated forever.
while true do
begin
end;
repeat
until false;
Break statement
"While true do" or "repeat until false" loops looks infinite at first glance,
but there may be a way to escape the loop through break.
var
i:integer;
begin
i := 0;
while true do
begin
i := i + 1;
if i = 100 then break;
end;
end;
var
i:integer;
begin
i := 0;
repeat
i := i + 1;
if i = 100 then break;
until false;
end;
