int a = 10; double b = static_cast<double>(a);

const int c = 20; int* d = const_cast<int*>(&c); *d = 30;

class Base {}; class Derived : public Base {};
Base* e = new Base; Derived* f = dynamic_cast<Derived*>(e);

int g = 10; float* h = reinterpret_cast<float*>(&g); cout << *h << endl;