file

1.

Code:

---

    #include <iostream>
    #include <fstream>
    using namespace std;

    void f(const char *fname)
    {
          ifstream fin(fname,ios::in | ios::binary);
          if(!fin)
                  cout << "File not opened";
    }

    int main()
    {
            system("notepad ABC");
 
            f("ABC");

            system("pause");
      }

---

When the notepad opens the file something is written into the file
and saved.But when f() opens the file the output shown : File not opened.How can i open the file from f()?
(Tried on Dev C++ 4.9.9.2 and Code Blocks 1.02rc)

2. Is _unlink for removing a file from C++ outdated as i need to include io.h for it 2 work?How can i do so using new headers?

'ABC" is probably not the name of the file -- try "ABC.TXT" -- and if it was not saved in your program's current working directory then you will have to specify the full path, such as "C:\\MYDIR\\ABC.TXT"

avoid using system() calls

it's potentially dangerous - who's to say I don't create a virus that replaces pause.exe with my own pause.exe (the virus). Your program would be happily spreading my virus and you would never know =)

and why are you opening the file as binary when you wrote it as plain text?

and if you use ifstream ios::in is assumed.