I m 存在试图从txt档案中接线的问题。 我在另一部法典和文件中使用了类似的算法,似乎没有任何问题(所有线都印制)。 然而,当我尝试使用一条线(通常)时,我有直线线=“”。 我的界线不是空洞的,我事先要检查一下档案是否开立。 以下是我方案的职能。 谁能提供某种帮助? 感谢!

我正试图审理A案。

  void Database::LoginMenu(string code)
  {
    cout << endl;
    cout << "Thank You for Login In, Would You Like To..." << endl;
    cout << "====================================================" << endl;
    cout << "A. View your registration information" << endl;
    cout << "B. Search for others" << endl;
    cout << "C. Search for Upcoming" << endl;
    cout << "D. Enter the Database" << endl;

    char choice, YN;

    cout << endl;
    cout << "Please choose an option: ";
    cin >> choice;

    switch(choice)
    {
    case  A :
        {
            ifstream myfile("RegistrationInfo.txt");
            string line;
            if(myfile.is_open())
            {   
                while(!myfile.eof())
                {
                    getline(cin, line);

                    if(line[5] ==  : )
                    {
                        line = line.substr(7, line.size());
                    }
                    if(line == code)
                    {
                        while(!line.empty())
                        {
                            cout << line << endl;
                        }
                    }
                }
            }   
            cout << "Would you like to return to the menu? (Y/N)";
            cin >> YN;      

            if(YN ==  Y )
            {
                LoginMenu(code);
            }

            myfile.close();
        }
        break;
    case  B :
        {
            ifstream filein("RegistrationInfo.txt");
            string temp, YN, enteredInfo;
            int n = 0;

            cout << "Who do you wish to search for? :";
            cin >> enteredInfo;

            while(!filein.eof())
            {
                getline(cin, temp);
            }
        }
        break;
    case  C : upcomingComps();
        break;
    case  D : DatabaseMenu();
        break;
    }
  }

这里有几条线构成我的 t。

• CCode: abd50896
• Names: TomMullen NicoleLaBerge
• Compt: Rutgers DanceSport 2012
• Level: Newcomer
• Dance: Tango Waltz Quickstep Rumba ChaCha Jive