标题：kdj<0时买入100股

请教：kdj<0时买入100股后价格继续下跌至kdj<-3，此时又买入100股后股价回升，

回升至比kdj<-3时买入的价格涨两个百分点时卖出获利，股价继续回升至比kdj<0时买入的价格涨两个百分点时卖出获利。

 input:n(9,1,100,10),p1(3,2,40,4),p2(3,2,40,4)；//参数设置
RSV:=(CLOSE-LLV(LOW,N))/(HHV(HIGH,N)-LLV(LOW,N))*100;
K:SMA(RSV,P1,1);
D:SMA(K,P2,1);
J:3*K-2*D,NODRAW;

VARIABLE:pc1:=0,pc2:=0;


if cross(-3,J) and holding>0 then
begin
buy(1,100,marketr);
pc2:=ENTERPRICE;
end


if cross(0,J) and holding=0 then
begin
buy(1,100,marketr);
pc1:=ENTERPRICE;
end



if pc1<>0 and (c-pc1)/pc1>=0.02 and holding>0 then
begin
    sell(1,holding,marketr);
    pc1:=0;
end

if pc2<>0 and (c-pc2)/pc2>=0.02 and holding>0 then
begin
    sell(1,holding,marketr);
    pc2:=0;