Question

I have a variable f declared as a vector::iterator and I have it pointed to a c_str() because I am trying to read files from a directory . The code complied at first but none of my functions were begin called. Show can I write my class and function to allow me to pass it and use it in another function:
This is part of the code in int main().

int main() {
    vector<string> files;

    if (d) {
        //we successfully opened the directory
        //while there's still something we haven't looked at
        while ((dir = readdir(d)) != NULL) {
            //get the name of that thing
            string filename = dir->d_name;
            //filter out what we don't want
            if (filename == "." ||             //filter out current dir
                    filename == ".." ||            //filter out parent dir
                    filename.find(".csv") == string::npos)   //here is where you set up the match
                continue;

            //and add what we do want to our files data structure
            files.push_back(basepath + "/" + filename);
        } 
    }

    map<string, int> foo;

    double fail = 0;

    for (vector<string>::iterator f = files.begin(); f != files.end(); ++f) {
        Extract_Organize process;
        cout << "What";
        process.transform();
        process.create_file();
        cout << "Finished!\n";
    }
    return 0;
}

class Extract_Organize {
    public:
        Extract_Organize; 
        void transform();
        void create_file();
        string double_integrate(int, int); 
};
#endif

Answer 1

I’m guessing the problem is:

Extract_Organize process();

when it should be

Extract_Organize process;

There are tons of questions about most vexing parse here on StackOverflow, but the bottom line is that your code declares a function called process instead of creating an object Extract_Organize.