C++: pointer reference

整理自：Thinking in C++

---

pointer 也可以有 reference，注意语法：

#include <iostream>
using namespace std;

void increment(int*& i) { // i is a reference of int*
    i++;
}

int main() {
	int a = 5;
    int* i = &a;
	
    cout << "i = " << i << endl;
    increment(i);
    cout << "i = " << i << endl;
}

// output:
/*
	i = 0x22fe3c
	i = 0x22fe40
*/