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function ExpCalc(exp: string): string;
var
vScript: Variant;
begin
vScript := CreateOleObject('ScriptControl');
vScript.Language := 'VBScript';
Result := vScript.Eval(exp);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
s:string;
begin
s:=ExpCalc('100 *4.17/0.5*(55.22+22)/3.14');
ShowMessage(s);
end;
 


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unit Unit1;
interface
uses
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var s1:string;
var i:integer;
var n1:integer;
var tem1: string;
var tem2:integer;
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DelphiµÄHashTable

{-----------------------------------------------------------------------------
 Unit Name: HashTable
 Author:    LiuHeng
 Date:      2010-04-13
 Purpose:   ·â×°DelphiµÄHashTable
 History:
------------------------------- ......
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