Difference between revisions of "End"
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The [[Keyword|keyword]] <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> terminates an entity. | The [[Keyword|keyword]] <syntaxhighlight lang="pascal" enclose="none">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" enclose="none">program</syntaxhighlight>]], [[Unit|<syntaxhighlight lang="pascal" enclose="none">unit</syntaxhighlight>]] or [[Library|<syntaxhighlight lang="pascal" enclose="none">library</syntaxhighlight>]] | ||
* to conclude a [[Block|block]] of statements or instructions respectively | * to conclude a [[Block|block]] of statements or instructions respectively | ||
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For example: | For example: | ||
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<syntaxhighlight lang="pascal" highlight="6"> | <syntaxhighlight lang="pascal" highlight="6"> | ||
procedure proc0; | procedure proc0; | ||
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<syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> is used to indicate the end of the unit: | <syntaxhighlight lang="pascal" enclose="none">end</syntaxhighlight> is used to indicate the end of the unit: | ||
| − | <syntaxhighlight> | + | <syntaxhighlight lang=pascal> |
unit detent; | unit detent; | ||
uses math; | uses math; | ||
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It also closes a [[Record|record]]: | It also closes a [[Record|record]]: | ||
| − | <syntaxhighlight> | + | |
| + | <syntaxhighlight lang=pascal> | ||
Type | Type | ||
ExampleRecord = Record | ExampleRecord = Record | ||
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{{Keywords}} | {{Keywords}} | ||
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Revision as of 08:46, 14 February 2020
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The keyword end terminates an entity.
It appears at several occasions:
- to mark the end of a module, i.e. a
program,unitorlibrary - to conclude a block of statements or instructions respectively
- to wrap up some language constructs:
- most prominently
if … then … end, or case…of…end, but alsotry … except … finally … end
- most prominently
- to finish off certain type declarations, such as
object,recordandclass
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: begin — do — else — end — for — if — repeat — then — until — while
