When reading a file using stringstream, you must put this object in a loop.

When reading a file using stringstream, you must put this object in the Loop:

 

Ifstream ifstr (tablefilename); </P> <p> string line; <br/> while (! Ifstr. EOF () <br/>{< br/> stringstream linestr; <br/> Getline (ifstr, line); <br/> linestr <line. data (); <br/> // use the linestr <br/>} 

 

Stringstream linestr; do not start with a loop. Otherwise, each linestr <line. data (); stringstream. clear () does not clear the original data. When the next row comes in, the data of the previous row is still in it.