What will be the output of the following C++ code?

#include <iostream>
#include <exception>
using namespace std;
class myexception: public exception
{
    virtual const char* what() const throw()
    {
        return "My exception";
    }
} myex;
int main () 
{
    try
    {
        throw myex;
    }
    catch (exception& e)
    {
        cout << e.what() << endl;
    }
    return 0;
}