一个对象构造了后，系统构造了后析构与否与编译器有关？
今天复习了C++语言，编了一个小程序。发现一个在对象构造了后，在VC6下面系统会自己调用该类的析构寒暑，而在Dev-C++（使用gcc）下面就不会调用？另外，如果建立的是对象的指针，那么系统是不会自己调用析构函数的。
代码如下：
#include
using namespace std;
class Counter
{
private:
int elem;
public:
Counter();
Counter(int elem);
~Counter();
};
static int counter;
Counter::Counter()
{
elem = 0;
counter++;
cout<<"in Counter()"<
<endl;
cout<<"counter = "<<endl;
}
Counter::Counter(int arg)
{
elem = arg;
counter++;
cout<<"in Counter(int)"<<endl
cout<<"counter = "<<endl;
}
Counter::~Counter()
{
counter--;
cout<<"in ~Counter()"<<endl;
cout<<"counter = "<<endl;
}
int main(int argc, char *argv[])
{
Counter c1;
Counter c2;
Counter c3;
Counter *cp = new Counter(10);
cp->~Counter();
return 0;
}
在VC6下的运行结果是：
in Counter()
counter = 1
in Counter()
counter = 2
in Counter()
counter = 3
in Counter(int)
counter = 4
in ~Counter()
counter = 3
in ~Counter()
counter = 2
in ~Counter()
counter = 1
in ~Counter()
counter = 0
Press any key to continue
而在Dev-C++种结果为：
in Counter()
counter = 1
in Counter()
counter = 2
in Counter()
counter = 3
in Counter(int)
counter = 4
in ~Counter()
counter = 3
Press any key to continue . . .
=================================
结论：
在对象的销毁阶段，是否调用析构函数，始于编译器有关的，而不是由语言定义的。所以在实际编程中，这一点对对象生命周期的控制的理解非常实用。:-)
