reading a file multiple times

[mahmoodn]

I'm opening a file and reading to the end of it. Then I want to go back to the beginning to read some other data. I wrote this code:

    ifstream fin2( "dictionary.txt" );
    if ( !fin2.is_open() ) {
        std::cerr << "failed to open dictionary.txt\n";
        exit( 1 );
    }
 
    for ( ..... ) {
        while(!fin2.eof()) {
            getline( fin2, line );
            .....
        }
        fin2.close();
        fin2.open("dictionary.txt");
        }

Tracing the code is: for the first time, "while" loop is done completely. Then I close the file and open it again. in the next loop ("for" loop), the program does not enter the "while" loop. That means it is stuck at the end of the file. Any idea? thanks,

[Banfa]

Instead of calling .close then .open call .seekg

[mahmoodn]

yes, instead of

fin2.close();
fin2.open("dictionary.txt");
 

I have to use:

fin2.clear();
fin2.seekg(0, ios::beg);
 

Thanks :)