47 lines
1.4 KiB
HTML
47 lines
1.4 KiB
HTML
<html>
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<head>
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<object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e">
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<param name="Keyword" value="params">
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</object>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
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<title></title>
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<link rel="StyleSheet" href="../../default.css">
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</head>
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<body>
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<H1>Ïåðåìåííîå ÷èñëî ïàðàìåòðîâ</H1>
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<p>Äëÿ óêàçàíèÿ òîãî, ÷òî ïîäïðîãðàììà äîëæíà èìåòü ïåðåìåííîå ÷èñëî ïàðàìåòðîâ,
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èñïîëüçóåòñÿ êëþ÷åâîå ñëîâî <b><code>params</code></b>, çà êîòîðûì ñëåäóåò
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îïèñàíèå äèíàìè÷åñêîãî ìàññèâà. Íàïðèìåð:</p>
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<blockquote>
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<code><b>function</b> Sum(<b>params</b> a: <b>array</b> <b>of</b> integer): integer;
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<b><br>
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begin</b>
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<br>
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Result := 0;
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<b><br>
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for</b> i: integer := 0 <b>to</b> a.Length <b>do</b>
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<br>
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Inc(Result,a[i]);
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<b><br>
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end;</b></code>
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</blockquote>
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<p>Ïðè âûçîâå
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ïîäïðîãðàììû íà ìåñòå ôîðìàëüíîãî ïàðàìåòðà <b><code>params</code></b>
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ìîæåò áûòü ëþáîå íåíóëåâîå êîëè÷åñòâî ôàêòè÷åñêèõ
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ïàðàìåòðîâ ñîâìåñòèìîãî òèïà, ïåðå÷èñëÿåìûõ ÷åðåç çàïÿòóþ:</p>
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<blockquote>
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<p><code><b>var</b> s: integer := Sum(1,2,3,4,5);<br>
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s := s + Sum(6,7);</code></p>
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</blockquote>
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 ñïèñêå ïàðàìåòðîâ êëþ÷åâîå ñëîâî <b> <code>params</code></b>
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ìîæåò óêàçûâàòüñÿ òîëüêî äëÿ ïîñëåäíåãî ïàðàìåòðà, ïðè÷åì, ýòîò ïàðàìåòð íå
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äîëæåí áûòü ïàðàìåòðîì ïî óìîë÷àíèþ. Ïàðàìåòðû <b><code>params</code></b> âñåãäà ïåðåäàþòñÿ òîëüêî ïî çíà÷åíèþ.
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</body>
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</html>
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