用全局变量
比如ab为开仓,c要平a,d要平b
就要这样写:
variabe:n=0,m=0;
if a and holding=0 and n=0 then begin
buy......;
n:=1;
end
if b and holdig=0 and m=0 then begin
buy......;
m:=1;
end
if c and holding>0 and n=1 then begin
sell.......;
n:=0;
end
if d and holding>0 and m=1 then begin
sell.......;
m:=0;
end