example15.cpp

来自「Advanced Internet Programming Lecture 2 」· C++ 代码 · 共 29 行

#include <iostream>
using namespace std;
class cl {
public:
  cl(int i) { val=i; }
  int val;
  int double_val() { return val+val; }
};

int main()
{
  int cl::*data; // data member pointer
  int (cl::*func)(); // function member pointer
  cl ob1(1), ob2(2); // create objects

  data = &cl::val; // get offset of val
  func = &cl::double_val; // get offset of double_val()

  cout << "Here are values: ";
  cout << ob1.*data << " " << ob2.*data << "\n";

  cout << "Here they are doubled: ";
  cout << (ob1.*func)() << " ";
  cout << (ob2.*func)() << "\n";

  return 0;
}