c++ - Qt - record from .cvs file causing errors when pushed into vector -

i writing program fills qtableview data cvs file. pushing data vector of objects class. want able catch record file may cause out of bound error , move onto next line without adding record table or vector.

here function populates table:

qstring filename = "currentstudents.csv"; qfile file(filename); file.open(qiodevice::readonly);  int lineindex = 0;  qtextstream input(&file);  while (!input.atend()) {     std::vector<qstring> newrecord;     qstring fileline = input.readline();      qstringlist linetoken = fileline.split(",", qstring::skipemptyparts);      (int = 0; < linetoken.size(); i++) {          qstring value = linetoken.at(i);         newrecord.push_back(value);       //this line out of bounds error comes         qstandarditem *item = new qstandarditem(value);         currentstudentsmodel->setitem(lineindex, i, item);     }      try     {         //creating student object information parsed file          currentstudent student(newrecord.at(0), newrecord.at(1), newrecord.at(2).toint(), newrecord.at(3).toint(), newrecord.at(4).toint(), newrecord.at(5).touint());         currentstudents.push_back(student);      }      catch (const std::out_of_range& e)      {             qdebug() << "out of range error: " << e.what();      }      lineindex++; } 

if record in file formatted in weird way such (,,,,,,) or without 6 commas separate data, load record table improperly , cause out of bounds error eventually. how program skip on problematic line , move onto next?

you add validation test:

while (!input.atend())  {     // ...     (int = 0; < linetoken.size(); i++) {         // load newrecord...     }     // validate..     if (newrecord.size() != 6)     {          // print warning here ?          // skip          continue;     }     if (newrecord.at(0) == "")  // example...     {          // print warning here ?          // skip          continue;     }     // more validation ?      // add record     currentstudent student(newrecord.at(0), newrecord.at(1), newrecord.at(2).toint(), newrecord.at(3).toint(), newrecord.at(4).toint(), newrecord.at(5).touint());     currentstudents.push_back(student);  } // end loop