面向菜单的程序C++的困难

我在尝试使用 getline 命令时遇到问题，用户可以在其中输入电影，然后添加到电影集合(存储在"movies.txt中(

我的代码正在编译，但它会自动从第 3 种情况开始。当我按"q"退出该案例时，它会恢复到菜单，但是当我尝试写出文件或打印集合时，没有保存任何电影标题。我应该何去何从？我觉得我正处于理解这一点的风口浪尖。

    #include <iostream>
    #include <string>
    #include <fstream>
    using namespace std;
    const int ARRAY_SIZE = 200;
    string movieTitle [ARRAY_SIZE];
    int loadData (string pathname);
    int writeData (string pathname);
    int getTitle (string movieTitle[]);
    void showAll (int count);
    int main()
    {
        loadData("movies.txt");
        char userInput;
        string movieTitle[ARRAY_SIZE];
        int count = getTitle(movieTitle);
        bool endOfProgram = false;
        while (endOfProgram ==false)
        {
            cout << "1. Read in Collection" << endl;
            cout << "2. Print Collection" << endl;
            cout << "3. Add a Movie to the Collection" << endl;
            cout << "4. Write out Collection" << endl;
            cout << "5. Quit the Program" <<endl;
            cin >> userInput;
            switch(userInput)
            {
                case('1'): 
                {
                    loadData("movies.txt");
                    break;
                }
                case('2'):
                {
                    showAll(loadData("movies.txt"));
                    break;
                }
                case('3'):
                {
                    cout << getTitle(movieTitle);
                    break;
                }
                case('4'):
                {
                    cout <<"Write out Collection" << endl;
                    writeData("movies.txt");
                    break;
                case('5'):
                {
                    endOfProgram=true;
                    cout << "Have a nice day" <<endl;
                    break;
                }
            }
            }
        }
    }
    int loadData (string pathname)
    {
        int count = 0;
        ifstream inFile;
        inFile.open(pathname.c_str());
        if (!inFile)
            return -1;
        else
        {
            while(!inFile.eof())
            {
                getline(inFile, movieTitle[count]);
                count++;
            }
        }
        return count;
    }
    int writeData (string pathname)
    {
        ofstream outfile;
        outfile.open("movies.txt");
        if(!outfile.is_open())
        {
            cout << "Cannot open movies.txt" << endl;
            return -1;
        }
        outfile.close();
        return 0;
    }
    void showAll (int count)
    {
        cout << "n";
        for (int i=0; i< count; i++)
        {
            cout << movieTitle[i] << endl;
        }
        cout << "n";
    }
    int getTitle (string movieTitle[])
    {
        string movie;
        int count = 0;
        while(true)
        {
            cout <<"Enter Movie Titles (Type 'q' to quit)" <<endl;
            cin >> movie;
            if (movie == "q")
            {
                break;
            }
            movieTitle [count] = movie;
            count++;
        }
        return count;
    }