Banking application with a menu

bank.cpp

#include "MenuHeader.h"

class Menu {
	public:
		void balanceStatment();
		void options();
		void bankInfo();
		void accountInfo();
		void statements();
		void selection();
		void askWithdraw();
		void askDeposit();
		void render();
};

void Menu::balanceStatment(){
	cout << "Your current balance is: $" << balance << endl;
};

void Menu::options(){
	cout << "1.	Check balance" << endl;
	cout << "2.	Make withdrawal" << endl;
	cout << "3.	Make deposit" << endl;
	cout << "4.	View account information" << endl;
	cout << "5.	View statement" << endl;
	cout << "6.	View bank information" << endl;
	cout << "7.	Exit" << endl;
};

void Menu::bankInfo(){
	cout << "Devry Bank, established 2011" << endl;
	cout << "(123) 456-7890" << endl;
	cout << "12345 1st St." << endl;
	cout << "Someplace, NJ 12345" << endl;
}
void Menu::accountInfo(){
	cout << "Brandt Lareau" << endl;
	cout << "Account number: 8324929" << endl;
}

void Menu::statements(){
	cout << "01/01/11 - McDonald’s - $6.27" << endl;
	cout << "01/15/11 - Kwik Trip - $34.93" << endl;
	cout << "02/28/11 - Target - $124.21" << endl;
}

void Menu::selection(){
	int input;
	cout << "Use Keys 1 - 7 to make selection: ";
	cin >> input;
	if(input < 8 && input >= 0){
		menu_selection = input;
	} else {
		cout << "Sorry you selection was not found please select from the menu below" << endl;
		options();
		selection();
	}
}

void Menu::askWithdraw(){
	float withdraw = 0;
	cout << "How much would you like to withdraw? $";
	cin >> withdraw;
	balance = balance - withdraw;
}

void Menu::askDeposit(){
	float deposit;
	cout << "How much would you like to deposit? $";
	cin >> deposit;
	balance = deposit + balance;
}

void Menu::render(){
	if(menu_selection == 1){
		balanceStatment();
	} else if (menu_selection == 2){
		askWithdraw();
	} else if (menu_selection == 3){
		askDeposit();
	} else if (menu_selection == 4){
		accountInfo();
	} else if (menu_selection == 5){
		statements();
	} else if (menu_selection == 6){
		bankInfo();
	} else if (menu_selection == 7){
		running = false;
	} else {
		selection();
	}
}

void main(){
	Menu menu;
	while(running){
		menu.options();
		menu.selection();
		menu.render();
	}
	system("pause");
}

MenuHeader.h

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;

float balance;
int menu_selection = 0;
bool running = true;