Returning to beginning of file after getline

Question

So i\'ve read all the lines from a file thusly

while (getline(ifile,line))
    {
        // logic
    }

Where ifile is an ifstream and line

Answer 1

Since you have reached (and attempted to read past) the end of the file, the eof and fail flags will be set. You need to clear them using ifile.clear – then try seeking:

ifile.clear();
ifile.seekg(0);