포인터와 참조자

const 포인터와 const 참조자

자칫 잘 못 생각하면 헷갈릴 수 있음.

#include <iostream> using namespace std; int main(void) { const int num=20; const int* ptr=&num; const int& ref=*ptr;// int& ref=num;와 같다. const int* (&ref2)=ptr;// ref2는 포인터 변수 ptr의 별명     cout << "num : "<< num << endl; cout << "*ptr : "<< *ptr << endl; cout << "ref : "<< ref << endl; cout << "*ref2 : "<< *ref2 << endl<<endl; cout << "&num : "<< &num << endl; cout << "ptr : "<< ptr << endl; cout << "&ref : "<< &ref << endl; cout << "ref2 : "<< ref2 << endl<<endl; cout << "&ptr : "<< &ptr << endl; cout << "&ref : "<< &ref << endl; cout << "&ref2 : "<< &ref2 << endl; }