主题：请编写模型高手帮忙！循环的问题

cond1:c>=llv(l,enterprice)+100;
cond2:hhv(h,enterprice)>=c+100;
cond3:holding=0 and c>=llv(l,0)+100;
variable:a:=0;
if holding=0 and c>=llv(l,0)+100 and a=0 then
begin
buy(cond3,1,market);
a:=1;
end

if cond1   then
begin
   sellshort(1,0,market);
   buy(holding=0,1,market);
end
if cond2  then
begin
    sell(1,0,market);
    buyshort(holding=0,1,market);
   
end