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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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