主题：编写请教

请教老师；我要在模型中分成4个组进行开平仓，我这样编写模型测试通不过，提示；未定义的变量；wn.请老师看看哪里不对？谢谢

ab为开仓，c平a，d平b
variabe:wn=0,wm=0,wq=0,wp=0;

if a and holding=0 and  wn=0 then begin

    buy......;

    wn:=1;

end

if c and holding=0 and  wn=1 then begin

    sell.......;

    wn:=0;

end

 

 

if b and holdig=0 and wm=0 then begin

    buy......;

    wm:=1;

end

 

if d and holdig=0 and m=0 then begin

    sell.......;

    wm:=1;

end