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procedure DoubleTheValue (var Value: Integer);
begin
Value := Value * 2;
end;
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var
X: Integer;
begin
X := 10;
DoubleTheValue (X);
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function DoubleTheValue (const Value: Integer): Integer
±àÒëÆ÷»áÑ¡ÓÃÒ»ÖÖÓëÒýÓòÎÊýÏàËÆµÄ·½·¨±àÒë³£²Î£¨C++ÊõÓïÖеij£Á¿ÒýÓã©£¬µ«ÊÇ´Ó±íÃæÉÏ¿´³£²ÎÓÖÓëÖµ²ÎÏàËÆ£¬ÒòΪ³£²Î³õʼֵ²»ÊÜÀý³ÌµÄÓ°Ïì¡£
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function Sum (const A: array of Integer): Integer;
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¼¼ÊõÉÏ£¬array of const ÀàÐ͵ÄÊý×é¾ÍÄÜʵÏְѲ»Í¬ÀàÐÍ¡¢²»Í¬¸öÊýÔªËØ×é³ÉµÄÊý×éÒ»ÏÂ×Ó´«µÝ¸øÀý³Ì
function Format (const Format: string; const Args: array of const): string;
N := 20;
S := 'Total:';
Label1.Caption := Format ('Total: %d', [N]);
Label2.Caption := Format ('Int: %d, Float: %f', [N, 12.4]);
Label3.Caption := Format ('%s %d', [S, N * 2]);
µ«ÎÒÃÇÍùÍù»áÓöµ½ÕâÑùµÄÎÊÌ⣺
ÔÚFUN£¨£©Öд«Èë var a: array of integer ²ÎÊýÖ®ºó
²»ÄÜÔÚº¯ÊýÀïSetLength£¨a£¬num£©;
ËùÒÔÎÒÃǰѲÎÊýÉèΪ¶¯Ì¬Êý×éÀàÐÍ
type
tarrayofinteger = array of integer;
procedure grow( var data: tarrayofinteger );
begin
setlength( data, length(data) ,   г¤¶È );
// ¶¯Ì¬Êý×é×÷Ϊ²ÎÊý¿ÉÒԸıäÊý×é´óС¡£
end;
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