file io - C++ FileIO weird behaviour -

While writing a program I came across the strange behavior of std :: ofstream Refer to the code

  Strictly; Dire.open ("dir.txt", std :: IOS :: out); // some other code (int i = 0; i & lt; dir.size (); i ++) {terrible & lt; & Lt; DIR [I] & lt; & Lt; "\ T"; // dir is the integer vector in which there are values ​​between 0-9}  

Now when I open the dir.txt content:

  If I give a space and then the tab (\ t) then it works correctly or \ n also works correctly for that matter.  Strict & lt; & Lt; DIR [I] & lt; & Lt; "\ T";  
 
 And now the output is: 
 
  4 4 5 5 5 5 5 5 .. and so on  
 
 I also tried to flush the output buffer to  dire.flush ()  file, but still the same result. 
 
 I'm definitely using the  \ t , but I would like to know why this is happening. 
 

There may be a bug problem if you are using Notepad to view the file.

A bug occurs when the string is executed with the other characters without the Win32 charset recognition function IsTextUnicode IsTextUnicode sees that it is valid whether the UTF-16LE Chinese is valid and it returns the correct returns , And this application incorrectly interprets text as UTF-16LE.