File IO (txt file)

How do I read information from a certain line from a txt file in as a char, and then edit it.

This my code, but it doesn't work? Can someone please help as File IO is one of my weaker areas of C++..

Code:

---

  char replacement[10];
    int x;
    int lines =;
    char buffer[256];

    cout << "Please Enter the line you would like to edit: ";
    cin >> x;
    endl;
    cout << "Line " << x << " curently reads ";
    endl;
    ifstream afile (managerfile);
    afile.getline (buffer,100);
    while(afile.getline (buffer,100))
      {
        if(lines==x) cout << buffer;
        else cout << "Line " << x << " does not exsist";
      }
    afile.close();
        endl;
    cout << "Replace with: ";
    cin >> replacement;
    endl;
    ofstream bfile (managerfile, ios::app);
      while(bfile.getline (buffer,100))
      {
        if(lines==x);
        bfile<<replacement;
      }
    bfile.close();
    cout<<"Line Succesfully Edited";

---

Also can someone explain what the 100 after (buffer, is refering to?

Thanks.

There is LOTS of information on this topic on the FAQ board, and a comprehensive tutorial to this in the tutorials section of the main site.

http://www.cprogramming.com/tutorial.html

Cheers Kermi

But I've read through the tutorials about file io and search the net but cann't find any info on how to goto to specific line in a txt file and then edit it??
:(
:confused: