example18.cpp

来自「Advanced Internet Programming Lecture 2 」· C++ 代码 · 共 27 行

nclude <iostream>
using namespace std;

int main()
{
  int a;
  int &ref = a; // independent reference

  a = 10;
  cout << a << " " << ref << "\n";

  ref = 100;
  cout << a << " " << ref << "\n";

  int b = 19;
  ref = b; // this puts b's value into a
  cout << a << " " << ref << "\n";

  ref--; // this decrements a
         // it does not affect what ref refers to

  cout << a << " " << ref << "\n";

  return 0;
}