procedure TForm1.Button1Click(Sender: TObject);
var i, j,m: real;
begin
i := 4.56;
j := 4.4;
m:=trunc((i-j)*100+0.1)/100;
showmessage(floattostr((m)));
end;
var i, j,m: real;
begin
i := 4.56;
j := 4.4;
m:=trunc((i-j)*100+0.1)/100;
showmessage(floattostr((m)));
end;
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货