include   <iostream.h>   
  #include   <string.h>   
    
  #define   MAX_NAME_LENGTH   20   
  class   Person   
  {   
  public:   
  Person(int   i_Number,   char*   i_pName):m_nNumber(i_Number){   i_pName   ==   NULL?   memset(m_pName,'\0',MAX_NAME_LENGTH):strlen(i_pName)>MAX_NAME_LENGTH   ?   memcpy(m_pName,   i_pName,   MAX_NAME_LENGTH)   :   strcpy(m_pName,   i_pName);}   
  const   char*   GetName()   const   {return   m_pName;}   
  int   GetNumber()   const   {return   m_nNumber;}   
  void   SetName(   const   char*   i_pName   );   
  void   SetNumber(   int   i_Number   )   {m_nNumber   =   i_Number;};   
  protected:   
  int   m_nNumber;   
  char   m_pName[MAX_NAME_LENGTH];   
  };   
  void   Person::SetName(   const   char*   i_pName   )   
  {   
  if   (i_pName   ==   NULL)   
  return;   
  strlen(i_pName)>MAX_NAME_LENGTH   ?   memcpy(m_pName,   i_pName,   MAX_NAME_LENGTH)   :   strcpy(m_pName,   i_pName);   
    
  }   
    
  class   student:public   Person   
  {   
  public:   
  student(int   i_mark,   int   i_Number,   char*   i_pName   ):m_nMark(i_mark),   Person(i_Number,   i_pName){}   
  student():m_nMark(0),Person(0,NULL){};   
  int   GetMark()   const   {   return   m_nMark;   }   
  void   SetMark(   int   i_mark   )   {   m_nMark   =   i_mark;   }   
  friend   ostream&   operator<<   (   ostream&   os,   student&   i_student   );   
  friend   istream&   operator   >>   (   istream&   is,   student&   i_student   );   
  private:   
  int   m_nMark;   
  };   
  ostream&   operator<<   (   ostream&   os,   student&   i_student   )   
  {   
  os<<"The   Student   Infomation:"<<endl;   
  os<<"Name:"<<i_student.GetName()<<endl;   
  os<<"Number:"<<i_student.GetNumber()<<endl;   
  os<<"Marks:"<<i_student.GetMark()<<endl;   
  return   os;   
  }   
  istream&   operator   >>   (   istream&   is,   student&   i_student   )   
  {   
  char   lpc_Name[MAX_NAME_LENGTH]   =   {0};   
  int   li_Number   =   0,   li_mark   =   0;   
    
  cout<<"Input   Student's   Information"<<endl;   
  cout<<"Name:"<<endl;   
    
  is   >>   lpc_Name;   
  i_student.SetName(lpc_Name);   
    
  cout<<"Number:"<<endl;   
  is   >>   li_Number;   
    
  i_student.SetNumber(li_Number);   
  cout   <<"Marks"<<endl;   
    
  is   >>   li_mark;   
  i_student.SetMark(   li_mark   );   
    
  return   is;   
    
  }   
  void   main()   
  {   
  student   Example;   
    
  cout   <<   Example;   
  cin   >>   Example;   
  cout   <<Example;   
  }