分离文件中的单词写到另一文件中

set<char*>Word;
ofstream ofs("c://word.txt",ios_base::app);

//按给定的标点来拆分单词
void SplitString(const string&str)
{
 size_t nlen = str.length();
 char *strDest = new char[nlen + 1];
 strcpy(strDest,str.c_str());
 char *flag =",.!:<>?";

 char *p = strtok(strDest,flag);
 while(p)
 {
  //cout<<p<<"/n";
        Word.insert(p);
  ofs<<p<<"/n";
  p = strtok(NULL,flag);
 }
 delete[]strDest;  
}

int _tmain(int argc, _TCHAR* argv[])
{

 ifstream ifs("c://Music.txt");
   
 if (!ifs.is_open())
 {
  cout<<"open file failed/n";
  return 0;
 }

 istream_iterator<string>ii(ifs);
 istream_iterator<string>eof;
 for_each(ii,eof,SplitString);

 //将文件中分离的单词写入到文件中
 if (!ofs.is_open())
 {
  cout<<"open file failed/n";
  return 0;
 }

 ifs.close();
 ofs.close();
 system("pause");
 return 0;
}