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a. 退税功能
原标题:ofstream- save a function to return a txt

I m试图在轴心档案中添加日期。 但是,这并不是以可读写的形式出现的。

有些人可以帮助我吗? 我非常感谢! 谢谢。

守则

SAVE:

//...code....///

ofstream myfile ("text.txt");
  if (myfile.is_open())
  {
    myfile << "date: " << date_function();
    myfile.close();
  }

DATE FUNCTION:

  void example::date_function(){
  //...code....///       
  clock = localtime(&attrib.st_atime);
  strftime(buf, sizeof(buf), "%a %Y-%m-%d %H:%M:%S %Z", clock);
  cout << buf;
  }
问题回答

您的职衔有<代码> 删除的回籍类型,你正在将它列入档案。 也许你想像这一点:

void date_function(ofstream & ofs){     
  clock = localtime(&attrib.st_atime);
  strftime(buf, sizeof(buf), "%a %Y-%m-%d %H:%M:%S %Z", clock);
  ofs << "date: " << buf;
  }

ofstream myfile ("text.txt");
  if (myfile.is_open())
  {
    date_function(myfile);
    myfile.close();
  }

返回类型——功能应当加以说明。

  string example::date_function(){
      clock = localtime(&attrib.st_atime);
      strftime(buf, sizeof(buf), "%a %Y-%m-%d %H:%M:%S %Z", clock);
      return buf;
  }

(以什么方式界定了<代码>buf?) 这在你的问题中使用,但我看不到定义吗?





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