Output of the code snippet will be:

#includeiostream
using namespace std;
class Test1
{
    public:
    virtual void show() { 
        cout"Hello from Test1"endl;
    }
};
class Test2:public Test1
{
    public:
    void show() { 
        cout"Hello from Test2"endl;
    }
};
int main(void)
{
    Test2 obj;
    obj.show();
    return 0;
}