I am working on an C++ encryption program and I can use some help?

Develop a program that performs simple cryptography. The program will allow


the user to enter a string and a cryptographic key, and the program will then encrypt the string using the key and send the output of the encryption to a f\ile.


This is what I have so far


#include %26lt;iostream%26gt;


#include%26lt;string%26gt;


using namespace std;


class Message


{


private:


string content;


int location;


public:


Message() : content(""), location(0) {};


Message(string s) : content(s), location(0) {};


string print() const;


void addToContent(string s);


};


string Message::print() const


{


return(content);


}


void Message::addToContent(string s)


{


content.append(s);


}


int main ()


{


string input;





cout %26lt;%26lt; "enter some text: ";


getline(cin, input);





Message rect(input);





cout %26lt;%26lt; "\nText was: " %26lt;%26lt; rect.print() %26lt;%26lt; endl;





return 0;


}

I am working on an C++ encryption program and I can use some help?
So what, exactly, is your question?