int main() { 
    int value = 42; int *a = &value;
    cout << a << '\n'
    << *a << '\n';
    *a = 1000;

    cout << a << '\n'
    << *a << endl;

    int num;
    cout << "Input a value: ";
    cin >> num;
 
    while (true) {
    cout << num * *a;
    break;
    }
return 0;
}