So Lost! Please Help!!

My code is supposed to output:
Enter account balance:
Enter account interest rate:
Enter the number of months until maturity
(must be 12 or fewer months):
When your CD matures in _ months,
it will have a balance of $(whatever the total is)

but it keeps telling me that EVERYTHING is not accessible in function main( )... Here is my code, please help me out, I would appreciate it A LOT!!

Code:

#include <iostream>
using namespace std;

class CDAccount
{
public:
        void input( );
        void output( );

        void set(int new_balance, int new_interest_rate, int new_term);

        int get_balance( );

        int get_interest_rate( );

        int get_term( );

        int get_data( );

private:
        //void check_data( );
        int balance;
        int interest_rate;
        int term;
};

int main( )
{
        CDAccount account;//, get_data;

        double rate_fraction, interest;
        rate_fraction = account.interest_rate/100.0;
        interest = account.balance*rate_fraction*(account.term/12.0);
        account.balance = account.balance + interest;

        cout.setf(ios::fixed);
        cout.setf(ios::showpoint);
        cout.precision(2);
        cout << "When your CD matures in "
             << account.term << " months,\n"
             << "it will have a balance of $"
             << account.balance << endl;
        return 0;
}

void CDAccount::input( )
{
        cout << "Enter account balance: $";
        cin >> balance;
        cout << "Enter accouunt interest rate: ";
        cin >> interest_rate;
        cout << "Enter the number of months until maturity\n"
             << "(must be 12 or fewer months): ";
        cin >> term;
        //check_data( );
}

void CDAccount::output( )
{
        cout << "balance =" << balance
             << ", interest rate = " << interest_rate
             << ", term = " << term << endl;
}

void CDAccount::set(int new_balance, int new_interest_rate, int new_term)
{
        balance = new_balance;
        interest_rate = new_interest_rate;
        term = new_term;
        //check_data( );
}

int CDAccount::get_balance( )
{
        return balance;
}

int CDAccount::get_interest_rate( )
{
        return interest_rate;
}
int CDAccount::get_term( )
{
        return term;
}

You have the variables in CDAccount marked as private. That means you can't access them in main() directly, or anywhere else for that matter, except from inside CDAccount.

You do, however, have public member functions of CDAccount that return the values of said private variables. Public member functions can be accessed from anywhere, which is what public means.

If this still doesn't help you see the solution, you need to review classes and the definitions of public and private and how that affects your code.