以3个条件为例
variable:n1=0,n2=0,n3=0;
if 开仓条件1 and n1=0 and holding=0 then begin
buy........;
n1:=1;
end
if 平仓条件1 and n1=1 and holding>0 then begin
sell........;
n1:=0;
end
if 开仓条件2 and n2=0 and holding=0 then begin
buy........;
n2:=1;
end
if 平仓条件2 and n2=1 and holding>0 then begin
sell........;
n2:=0;
end
if 开仓条件3 and n3=0 and holding=0 then begin
buy........;
n3:=1;
end
if 平仓条件3 and n3=1 and holding>0 then begin
sell........;
n3:=0;
end