测试代码高亮显示

#include "stdio.h"
#include "graphics.h"
#include "conio.h"
main()
{

  //注释行
  /*注释段落*/
  int x=360,y=160,driver=VGA,mode=VGAHI;
  int num=20,i;
  int top,bottom;
  initgraph(&driver,&mode,"");
  top=y-30;
  bottom=y-30;
  for(i=0;i<num;i++)
  {
    ellipse(250,250,0,360,top,bottom);
    top-=5;
    bottom+=5;
  }
  getch();
}