Help with build errors

[Amazon]

I am using Xcode. For some reason I am getting errors with the following code.

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

class A 
	{
	public:
		A() : m_msg("Apple") {}
		A(string msg) : m_msg(msg) {}
		virtual ~A() { message(); }
		void message() const
		{
			cout << m_msg << endl;
		}
	private:
		string m_msg;
	};

class B : public A 
	{
	public:
		B() : A("Apple") {}
		B(string msg) : A(msg), m_a(msg) {}
		void message() const
		{
			m_a.message();
		}
	private:
		A m_a;
	};

int main() {
        A *b1 = new B;
	B *b2 = new B;
	A *b3 = new B("Apple");
	b1­->message();
        // error: expected `;' before 'OTHER' token
	b2­->message();
        // error: expected `;' before 'OTHER' token
	b3­->message();
        // error: expected `;' before 'OTHER' token
	delete b1;
	delete b2;		
	delete b3;
}

Any help would be greatly appreciated.

[republic]

class B : public virtual A