text: #include "inventory.h"
  
  void manager(std::vector<std::string> &command, std::list<std::string> &list) {
      if (command[0] == "exit")
          exit_program(command);
      else if (command[0] == "help")
          help(command);
      else if (command[0] == "show")
          show(command, list);
      else if (command[0] == "insert")
          insert(command, list);
      else if (command[0] == "remove")
          remove(command, list);
      else
          std::cout << "Invalid command." << std::endl;
  }