主题：价格穿越均线模型求助

//收盘价大于20天均线且收盘价大于开盘价，买开
if cross(c,ma20) and c>o then begin
 sellshort(holding<0,0,thisclose);
 buy(holding=0,1,thisclose);
end

//收盘价小于20天均线，卖平
if cross(ma20,c) then sell(holding>0,0,thisclose);

//收盘价小于20天均线且收盘价小于开盘价，卖开
if cross(ma20,c) and c<o then begin
 sell(holding>0,0,thisclose);
 buyshort(holding=0,1,thisclose);
end

//收盘价大于20天均线，买平
if cross(c,ma20) then sellshort(holding<0,0,thisclose);