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Deklarera och använda arrayer
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Kategori: Blandat
Inlagt: 2006-11-17
Läst: 1367
Inlagt av: Jimmy
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Beskrivning |
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Här demonstreras hur statiska arrayer deklareras och används.
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Kod |
var
// Define static arrays
wordArray : Array[Word] of Integer; // Static, size=High(Word)
multiArray : Array[Byte, 1..5] of char; // Static array, 2 dimensions
rangeArray : Array[5..20] of string ; // Static array, size = 16
i : Integer;
begin
// Show the sizes and ranges of these arrays
ShowMessage('wordArray length = '+IntToStr(Length(wordArray)));
ShowMessage('wordArray lowest element = '+IntToStr(Low(wordArray)));
ShowMessage('wordArray highest element = '+IntToStr(High(wordArray)));
ShowMessage('multiArray length = '+IntToStr(Length(multiArray)));
ShowMessage('multiArray lowest element = '+IntToStr(Low(multiArray)));
ShowMessage('multiArray highest element = '+IntToStr(High(multiArray)));
ShowMessage('rangeArray length = '+IntToStr(Length(rangeArray)));
ShowMessage('rangeArray lowest element = '+IntToStr(Low(rangeArray)));
ShowMessage('rangeArray highest element = '+IntToStr(High(rangeArray)));
ShowMessage('');
// The full range of a static array are available before assignment,
// but the values will be unpredictable
ShowMessage('wordArray Element 7 = '+IntToStr(wordArray[7]));
ShowMessage('wordArray Element 20 = '+IntToStr(wordArray[20]));
// Use indexing to furnish an array
for i := 5 to 20 do
rangeArray[i] := IntToStr(i * 5);
// Now use indexing to display 2 of the elements
ShowMessage('rangeArray element 7 = '+rangeArray[7]);
ShowMessage('rangeArray element 20 = '+rangeArray[20]);
end;
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