#include <iostream> using namespace std; int main() { int i = 3; std::cout << "i: " << i << "\n"; int* pi = &i; std::cout << "pi: " << pi << "\n"; std::cout << "*pi: " << *pi << "\n"; int& ri = i; std::cout << "ri: " << ri << "\n"; *pi = 4; std::cout << "i: " << i << "\n"; return 0; }