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ʵÏÖ µÚÒ»¸öºÍµÚÈý¸ö¿òÊäÈëÊý×Ö ÖмäÊäÈë+ - * / ÔËËã·û µã»÷°´Å¥³öÏÖ½á¹û  Óà ¼Ó ¼õ ³Â ³ý  Ëĸöº¯Êý ʵÏÖ
function jia(x,y:Double):Double ;  º¯Êý¼Ó
var
c:Double;
begin
      c:=x+y  ;
      jia:=c;
end;
function jian(x,y:Double):Double ; º¯Êý¼õ
  var
d:Double;

begin
      d:=x-y;
      jian:=d;
end;
  function chen(x,y:Double):Double ;º¯Êý³Æ
  var
e:Double;

begin
      e:=x*y  ;
      chen:=e;
end;
function chu(x,y:Integer):double; º¯Êý³ý
var
e:Double;

begin
e:=x/y ;
chu:=e;
end;


procedure TForm1.Button1Click(Sender: TObject);  °´Å¥µÄʼþ´úÂë
var
x,z,d:Double;       
y:char;


begin
x:=strtoint(Edit1.text);  µÃµ½µÚÒ»¸öÊý×Ö
y:=Edit2.text;              ÕâÀï³ö´íÁË Ç°ÃæÊÇchar ÀàÐÍ ¿ÉÊDz»ÖªµÀÔõô¸Ä z:=strtoint(Edit3.text);  µÃµ½µÚ¶þ¸öÊý×Ö

if y="+" then              Èç¹û Y=¡°+¡±ºÅ
  d:=jia(x,y);              µ÷Óà jia º¯Êý
begin  &nbs


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