请老师们帮我解决一个问题，编程里面的

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extern double shoushu=0.01;
extern int Szhiyin=40;
extern int jiacang=40;
extern int beishu=2;
extern int cishu=8;
extern int zhisun=20;
int a,chicangdan,kaicang;

//+------------------------------------------------------------------+
//| expert initialization function |
//+------------------------------------------------------------------+
int init()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| expert start function |
//+------------------------------------------------------------------+
int start()
{
//----
if(Bars 100)
{
Print( bars less than 100
return(0);
}
Print( 持仓单方向1为买，2为卖： ,TheLastOrderType());
chicangdan=GetHoldingOrderCnt();
if(chicangdan 1)
{
if(TheLastOrderType()==-1)
{
if(shoudan==1)
{

mairu();
Print( 测试111

}
if(shoudan==2)
{

Print( 测试222

}
}
if(TheLastOrderType()==0)
{

Print( 测试11

}
if(TheLastOrderType()==1)
{

Print( 测试22
return(0);
}
}
//----
return(0);
}
//+------------------------------------------------------------------+
int TheLastOrderType()//返回最后历史单的方向 如果返回-1表示没有持仓
{
int P=-1;
for(int i=OrdersTotal()-1;i i--)
{
OrderSelect(i, SELECT_BY_POS, MODE_HISTORY);
if(OrderSymbol()==Symbol() OrderMagicNumber()==123 )
{
P=OrderType();
break;
}
}
return(P);
}

//+------------------------------------------------------------------+
int GetHoldingOrderCnt()
{
int j=0;
for(int i=0;i OrdersTotal();i++)
{
OrderSelect(i, SELECT_BY_POS, MODE_TRADES);
if(OrderSymbol()==Symbol() )
{
j=j+1;
}
}
return(j);
}

void mairu()
{
kaicang=OrderSend(Symbol(),OP_BUY,shoushu,Ask,3,Ask-500*Point,Ask+Szhiyin*Point, My order #2 ,123,0,Lime);
}

void maichu()
{
kaicang=OrderSend(Symbol(),OP_SELL,shoushu,Bid,3,Bid+500*Point,Bid-Szhiyin*Point, My order #2 ,123,0,Magenta);
}复制代码 编程, 老师
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