Help a newbi

[UpcomingChris]

Ok so i'm trying to write something very simple, I'm a complete newbi.

#include <iostream>

using namespace std;

int age;
char answer;

int main()
{
cout << "Hello, And welcome to my Quiz, This is just a basic Program\n\n";
system("PAUSE");
system("CLS");

cout << "Please enter your Age\n";
cin >> age;
cout << "So you are " << age << " Years old?, Y/N \n";
cin >> answer;
if(answer == "Y" || answer == "y")
{
cout << "Ok ";
}

system("PAUSE");
}

If you press N i wan't it to go Back to where you enter your age, How do i send it back to that line?, Or do i just ask the question again?