objcount.cpp

来自「Thinking in C++ 2nd edition source code 」· C++ 代码 · 共 33 行

//: C03:Objcount.cpp
// From Thinking in C++, 2nd Edition
// at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Counts objects in existence
#include <iostream>
using namespace std;

int count = 0;

class Obj {
 public:
  Obj() {
    count++;
    cout << "number of objects: " << count << endl;
  }
  ~Obj() {
    count--;
    cout << "number of objects: " << count << endl;
  }
};

int main() {
  Obj A, B, C, D, E;
  {
    Obj F;
  }
  {
    Obj G;
  }
} ///:~