Persistent data/settings in C++ application

Question

For the first time, I am writing a fairly complex application, which will remember the user's name, gender, age, etc. Here is what I need to happen:

• The application starts, and it checks to see if the information (name, age, etc) has been saved.
  • If not, the application gets this info and saves it.

When the user restarts this program, the program should see that the information is saved, and will save this information as C++ variables.

I can give more information if you don't know what I want. I have never done this before, and after searching the internet for a long time, I've only become more confused, so I'm afraid I need some serious hand holding, sorry.

Thanks,

-Chris.

Answer 1

It looks like you're new to C++, so I would recommend saving the information to a file. (that is where my coursework started, not with databases)

something like this should do the trick:

#include <iostream>
#include <fstream>
#include <string>
int main(){
    ifstream input("your_saved_file.txt");
    string name="", age="", etc="";
    input >> name >> age >> etc;
    if(name=="" || age=="" || etc==""){
        input.clear(); input.close();
        ofstream output("your_saved_file.txt");
        cout << "Enter name: ";
        cin >> name;
        cout << "Enter age: ";
        cin >> age;
        cout << "Enter etc: ";
        cin >> etc;
        output << name << endl << age << endl << etc << endl;
        output.close(); output.clear();
    }
    else{
        input.clear(); input.close();
        cout << "Name: " << name << " Age: " << age << " Etc: " << etc;
    }
    return 0;
}

hope that's the kind of thing you're looking for,

reagan