C++: Is there a way to declare objects within a conditional statement?

I'm having trouble figuring out how to properly create an object depending on the user's choice.

In the program, I ask the user which they class they want to be--Knight or Wizard. I take input '1' or '2' to represent Knight and Wizard.

I made a switch statement, and within case 1, I declared an object Knight, and the same for Wizard.

I need to use these objects outside of the switch statement, but I can't. I tried to make a 'default' object by making 'Player player;' but because the Player class has a pure virtual function, I can't do that either.

How do I do this effectively?

This is what I have so far:

int main()
{
std::string plyrName;
int input;
bool foo = false;

std::cout << "What is your name?\n";
std::cin >> plyrName;
std::cin.ignore(1000, '\n');

std::cout << "\nWelcome, " << plyrName << ". What class would you like to be?\n";
std::cout << "1. Knight.\n2. Wizard.\n";
std::cin >> input;

while (input != 1 && input != 2)
{
    if (foo == true)
        std::cout << "Please enter 1 for Knight and 2 for Wizard.\n";
    if (!(std::cin >> input))
    {
        std::cin.clear();
        std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
        std::cout << "\n";
        std::cout << "Only integers are allowed.\n";
    }
    else
        std::cout << "\n";
    foo = true;
}

switch (input)
{
case 1:
{
    Wizard player;
    break;
}
case 2:
{
    Knight player;
    break;
}
}


std::cout << "\nHere is your player information summary.\n";
std::cout << player.classType();

system("pause");
return 0;
}

I need to access the player object after is has been created, because I want to output to the user which class they selected. Both Knight and Wizard classes have a function to output this.