讲解C++编程中Address-of运算符&的作用及用法

// expre_Address_Of_Operator3.cpp
// compile with: /EHsc
// Demonstrate address-of operator &

#include <iostream>
using namespace std;

// Function argument is pointer to type int
int square( int *n ) {
  return (*n) * (*n);
}

int main() {
  int mynum = 5;
  cout << square( &mynum ) << endl;  // pass address of int
}

25