关于MACD背离作业，请牛版主批改，还有几个问题，谢谢！

源代码引自：http://bbs.520fx.com/viewthread. ... =%E8%83%8C%E7%A6%BB
  
  //+------------------------------------------------------------------+
  //| MACD_beili.mq4 Ver. 1.0 |
  //| MACD背离指标（按最高最低价计算）。 |
  //| Henry Zhao |
  //| shinetrip@yahoo.com |
  //| Feb. 19, 2007 |
  //+------------------------------------------------------------------+
  
  #property copyright \"Henry Zhao\"
  #property indicator_chart_window
  #property indicator_buffers 3
  #property indicator_color1 Cyan
  #property indicator_color2 Magenta
  #property indicator_color3 Black
  
  extern int method = 1;
  extern int bars_compared = 15; // 在多少个bar中寻找第二个峰值
  extern int number_of_bars = 1000;
  
  //---- buffers
  double ExtMapBuffer1[];
  double ExtMapBuffer2[];
  double ExtMapBuffer3[];
  
  
  //+------------------------------------------------------------------+
  //| 指标初始化代码 |
  //+------------------------------------------------------------------+
  int init(){
  //SetIndexStyle(0,DRAW_ARROW); // RSI背离信号用箭头表示
  SetIndexStyle(0,DRAW_NONE); // RSI背离信号用箭头表示
  SetIndexBuffer(0,ExtMapBuffer1);
  SetIndexArrow(0,233);
  //SetIndexStyle(1,DRAW_ARROW);
  SetIndexStyle(1,DRAW_NONE);
  SetIndexBuffer(1,ExtMapBuffer2);
  SetIndexArrow(1,234);
  
  SetIndexStyle(2,DRAW_ARROW,EMPTY,4); // 阶段高/低点用黑色点表示
  SetIndexBuffer(2,ExtMapBuffer3);
  SetIndexArrow(2,159);
  
  return(0);
  }
  
  
  //+------------------------------------------------------------------+
  //| 指标反初始化代码 |
  //+------------------------------------------------------------------+
  int deinit(){
  
  return(0);
  }
  
  
  //+------------------------------------------------------------------+
  //| 计算显示指标的条件 |
  //+------------------------------------------------------------------+
  int start(){
  int i, m, shift, bar1, bar2;
  double pos_adjust, low1, low2, high1, high2, v1, v2;
  
  pos_adjust = 100*Point; // 根据不同的时间框架确定信号显示的位置。主要是为了美观
  if(Period()==1) pos_adjust = 1*Point;
  if(Period()==5) pos_adjust = 3*Point;
  if(Period()==15) pos_adjust = 8*Point;
  if(Period()==30) pos_adjust = 10*Point;
  if(Period()==60) pos_adjust = 13*Point;
  if(Period()==240) pos_adjust = 20*Point;
  if(Period()==1440) pos_adjust = 50*Point;
  
  shift=Bars;
  if( shift>number_of_bars ) shift = number_of_bars;//只计数1000个k线
  
  for( i=shift-2*bars_compared; i>=0; i--)//i从第970条至第0根K线（包括第0根k线）开始从左向右循环计算，（为何要从第970根k线开始计算？从第1000根k线不行么？）
  {
  low1 = 0;
  if( Low[i+2]High[i+3]){
  bar1=i+2;
  high1 = High[bar1];
  } // 最高点必须是前三条已完成bar的中间那一条
  
  high2 = 0;
  if(method==1){
  bar2 = iHighest(NULL, 0, MODE_HIGH, bars_compared, i+4);
  if( bar2 != i+4 && bar2 != i+4 +bars_compared-1 ) high2 = High[bar2];
  }
  if(method==2){
  bar2 = iHighest(NULL, 0, MODE_HIGH, bars_compared, i+bars_compared);
  if( bar2 != i+bars_compared && bar2 != i + 2*bars_compared-1 ) high2 = High[bar2];
  }
  
  if( high1!=0 && high2!=0 && high1>high2){
  v1 = iMACD( NULL, 0, 12, 26, 9, PRICE_CLOSE, MODE_MAIN, bar1);
  v2 = iMACD( NULL, 0, 12, 26, 9, PRICE_CLOSE, MODE_MAIN, bar2);
  if( v1 < v2 ){ ExtMapBuffer2<i> = High<i> + pos_adjust;
  ExtMapBuffer3[bar1] = High[bar1] + pos_adjust*0.3;
  ExtMapBuffer3[bar2] = High[bar2] + pos_adjust*0.3;
  }
  }
  
  } // end of for(i)
  
  return(0);
  }
  //+------------------------------------------------------------------+[/td][/tr]

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