Cant use a variable name?

Hey everyone, another question on my banker program, here it is. Im trying to have a variable in my class that creates a file when the class is initiallized. But, when i open the file using a varialbe string instead of a static string..it doesnt work. Heres what im talking about.

When i put this in, it compiles without any error..look in the bold

Code:

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

class Banker
{
public:
	
	const static int CHECKING = 1;
	const static int SAVINGS = 0;


	Banker(string name, int iDeposit);
	 ~Banker();
	int GetBalance(int account);
	int Deposit(int amount, int account);
	int Transfer(int amount, Banker reciever);
protected:
	int cBalance;
    int sBalance;
	string bName;

    ofstream oAccount;
    ifstream rAccount;


};

Banker::Banker(string name, int iDeposit)
{
     cBalance = iDeposit;
     bName = name;
     oAccount.open("Blah.txt", ios::app);



}




int main()
{
	cout<< "Welcome to the Cullen Familly Banking Program.\n";
	cout<< "Please select a choice:\n\n";
	cout<< "1. Deposit\n";
	cout<< "2. Check Balance\n";
	cout<< "3. Make a transfer\n\n";
    cin.get();
	return 0;
}

Now, but when i make this simple adjustment i get errors...again look in the bold

Code:

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

class Banker
{
public:
	
	const static int CHECKING = 1;
	const static int SAVINGS = 0;


	Banker(string name, int iDeposit);
	 ~Banker();
	int GetBalance(int account);
	int Deposit(int amount, int account);
	int Transfer(int amount, Banker reciever);
protected:
	int cBalance;
    int sBalance;
	string bName;

    ofstream oAccount;
    ifstream rAccount;


};

Banker::Banker(string name, int iDeposit)
{
     cBalance = iDeposit;
     bName = name;
     oAccount.open(bName + ".txt", ios::app);



}




int main()
{
	cout<< "Welcome to the Cullen Familly Banking Program.\n";
	cout<< "Please select a choice:\n\n";
	cout<< "1. Deposit\n";
	cout<< "2. Check Balance\n";
	cout<< "3. Make a transfer\n\n";
    cin.get();
	return 0;
}

Here are the errors that i get when trying to compile this...:

c:\cpp stuff\banking\bankingmain.cpp: In method `Banker::Banker(basic_string<char,string_char_trai ts<char>,__default_alloc_template<false,0> >, int)':
c:\cpp stuff\banking\bankingmain.cpp:36: no matching function for call to `ofstream:pen (basic_string<char,string_char_traits<char>,__defa ult_alloc_template<false,0> >, ios:pen_mode)'
C:\DEV-C_~1\Include\G__~1\fstream.h:78: candidates are: void ofstream:pen(const char *, int = ios:ut, int = 436)



Any help much appreciated..thanks, justin

Code:

oAccount.open((bName + ".txt").c_str(), ios::app);

Open expects a C-style string, not a std::string.

so should i convert it to a character array?

>so should i convert it to a character array?
No, you should use the code I gave you. It creates a new string with the suffix and then calls c_str() on that string, returning a C-style string that's acceptable to open.

thank you, i didnt see the code