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// static_pointer_cast example
#include <iostream>
#include <memory>
struct A {
static const char* static_type;
const char* dynamic_type;
A() { dynamic_type = static_type; }
};
struct B: A {
static const char* static_type;
B() { dynamic_type = static_type; }
};
const char* A::static_type = "class A";
const char* B::static_type = "class B";
int main () {
std::shared_ptr<A> foo;
std::shared_ptr<B> bar;
foo = std::make_shared<A>();
// cast of potentially incomplete object, but ok as a static cast:
bar = std::static_pointer_cast<B>(foo);
std::cout << "foo's static type: " << foo->static_type << '\n';
std::cout << "foo's dynamic type: " << foo->dynamic_type << '\n';
std::cout << "bar's static type: " << bar->static_type << '\n';
std::cout << "bar's dynamic type: " << bar->dynamic_type << '\n';
return 0;
}
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