case 1:
        {
            int elem = std::stoi(vec.at(0));
            std::to_string(elem);

            std::cout << "ERROR: Weight sensor measurement only" << endl;
            std::cout << "ERROR: Ignore line " << nline << " of the input file" << endl;

            try
            {
                int elem = std::stoi(vec.at(0));
                std::to_string(elem);
            }
            catch (invalid_argument)
            {
                cerr << "ERROR: Weight sensor value read on line " << nline << " is not an integer" << endl;
                cerr << "Simulation terminated early : Please correct your data file" << endl;
            }
        }