Difference between revisions of "End"

From Free Pascal wiki
(to end do …)
m (replace legacy syntaxhighlight syntax; fix spelling mistake; fix syntax)
 
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{{end}}
 
{{end}}
  
The [[Keyword|keyword]] <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> terminates an entity.
+
The [[Keyword|keyword]] <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> terminates an entity.
 
It appears at several occasions:
 
It appears at several occasions:
  
* to mark the end of a module, i.e. a [[Program|<syntaxhighlight lang="pascal" enclose="none">program</syntaxhighlight>]], [[Unit|<syntaxhighlight lang="pascal" enclose="none">unit</syntaxhighlight>]] or [[Library|<syntaxhighlight lang="pascal" enclose="none">library</syntaxhighlight>]]
+
* to mark the end of a module, i.e. a [[Program|<syntaxhighlight lang="pascal" inline>program</syntaxhighlight>]], [[Unit|<syntaxhighlight lang="pascal" inline>unit</syntaxhighlight>]] or [[Library|<syntaxhighlight lang="pascal" inline>library</syntaxhighlight>]]
 
* to conclude a [[Block|block]] of statements or instructions respectively
 
* to conclude a [[Block|block]] of statements or instructions respectively
** either started by [[Begin|<syntaxhighlight lang="pascal" enclose="none">begin</syntaxhighlight>]], or
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** either started by [[Begin|<syntaxhighlight lang="pascal" inline>begin</syntaxhighlight>]], or
** started by [[Asm|<syntaxhighlight lang="delphi" enclose="none">asm</syntaxhighlight>]]
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** started by [[Asm|<syntaxhighlight lang="delphi" inline>asm</syntaxhighlight>]]
 
* to wrap up some language constructs:
 
* to wrap up some language constructs:
** most prominently [[If and Then|<syntaxhighlight lang="pascal" enclose="none">if … then … end</syntaxhighlight>]], or
+
** most prominently [[If and Then|<syntaxhighlight lang="pascal" inline>if … then … end</syntaxhighlight>]], or
** [[Case|<syntaxhighlight lang="pascal" enclose="none">case</syntaxhighlight>]] … [[Of|<syntaxhighlight lang="pascal" enclose="none">of</syntaxhighlight>]] … <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight>, but also
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** [[Case|<syntaxhighlight lang="pascal" inline>case</syntaxhighlight>]] … [[Of|<syntaxhighlight lang="pascal" inline>of</syntaxhighlight>]] … <syntaxhighlight lang="pascal" inline>end</syntaxhighlight>, but also
** [[Try, Except and Finally|<syntaxhighlight lang="delphi" enclose="none">try … except … finally … end</syntaxhighlight>]]
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** [[Try, Except and Finally|<syntaxhighlight lang="delphi" inline>try … except … finally … end</syntaxhighlight>]]
* to finish off certain [[Type|type]] declarations, such as [[Object|<syntaxhighlight lang="delphi" enclose="none">object</syntaxhighlight>]], [[Record|<syntaxhighlight lang="pascal" enclose="none">record</syntaxhighlight>]] and [[Class|<syntaxhighlight lang="delphi" enclose="none">class</syntaxhighlight>]]
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* to finish off certain [[Type|type]] declarations, such as [[Object|<syntaxhighlight lang="delphi" inline>object</syntaxhighlight>]], [[Record|<syntaxhighlight lang="pascal" inline>record</syntaxhighlight>]] and [[Class|<syntaxhighlight lang="delphi" inline>class</syntaxhighlight>]]
*iIn [[Extended Pascal|extended Pascal]] <syntaxhighlight lang="pascal" inline>to end do …</syntaxhighlight> starts the definition of the [[Finalization|<syntaxhighlight lang="pascal" inline>finalization</syntaxhighlight> part of a module]]
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* in [[Extended Pascal|extended Pascal]] <syntaxhighlight lang="pascal" inline>to end do …</syntaxhighlight> starts the definition of the [[Finalization|<syntaxhighlight lang="pascal" inline>finalization</syntaxhighlight> part of a module]]
  
 
For example:
 
For example:
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</syntaxhighlight>
 
</syntaxhighlight>
  
The <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> gloss is one of the exceptions to the rule that every statement must be followed by a [[Semicolon|semicolon]].
+
The <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> gloss is one of the exceptions to the rule that every statement must be followed by a [[Semicolon|semicolon]].
The statement immediately preceding an <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> does not require a semicolon.
+
The statement immediately preceding an <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> does not require a semicolon.
  
 
It is also used to end a Pascal module, in which case it is followed by a [[period]] rather than a semicolon (in the example below, the last semicolon is optional):
 
It is also used to end a Pascal module, in which case it is followed by a [[period]] rather than a semicolon (in the example below, the last semicolon is optional):
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</syntaxhighlight>
 
</syntaxhighlight>
  
<syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> is used to indicate the end of the unit:
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<syntaxhighlight lang="pascal" inline>end</syntaxhighlight> is used to indicate the end of the unit:
 
<syntaxhighlight lang=pascal>
 
<syntaxhighlight lang=pascal>
 
   unit detent;
 
   unit detent;
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It also closes a [[Record|record]]:
 
It also closes a [[Record|record]]:
  
<syntaxhighlight lang=pascal>
+
<syntaxhighlight lang="pascal">
 
  Type
 
  Type
 
   ExampleRecord = Record
 
   ExampleRecord = Record

Latest revision as of 23:49, 24 June 2020

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The keyword end terminates an entity. It appears at several occasions:

For example:

procedure proc0;
var
	a, b: integer;
begin
	
end;

The end gloss is one of the exceptions to the rule that every statement must be followed by a semicolon. The statement immediately preceding an end does not require a semicolon.

It is also used to end a Pascal module, in which case it is followed by a period rather than a semicolon (in the example below, the last semicolon is optional):

program proc1;
var
	SL: TStrings;
begin
	SL := TStringlist.create;
	try
		
	finally
		SL.free;
	end;
end.

end is used to indicate the end of the unit:

  unit detent;
  uses math;
 
  procedure delta(r:real);
 
  implementation
 
  procedure delta;
  begin
 
  ...
 
  end;
 
  ...
  (* Note: No corresponding '''begin''' statement *)
 
  end.

It also closes a record:

 Type
   ExampleRecord = Record
                     Values: array [1..200] of real;
                     NumValues: Integer; { holds the actual number of points in the array }
                     Average: Real { holds the average or mean of the values in the array }
                   End;


Keywords: begindoelseendforifrepeatthenuntilwhile