Count number of objects in memory at any given time. - C++ Class

C++ examples for Class:static member

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Description

Count number of objects in memory at any given time.

Demo Code

#include <iostream>

using namespace std;

class MyClass/*from  www.  j  av a  2 s . c  o  m*/
{
private:
    static int s_Counter;

    int* intValue{ &s_Counter };
public:
    MyClass()
    {
        ++(*intValue);
        cout << "Constructing: " << GetValue() << endl;
    }

    ~MyClass()
    {
        --(*intValue);
        intValue = nullptr;

        cout << "Destructing: " << s_Counter << endl;
    }

    MyClass(const MyClass& rhs)
        : intValue{ rhs.intValue }
    {
        ++(*intValue);
        cout << "Copying: " << GetValue() << endl;
    }

    int GetValue() const
    {
        return *intValue;
    }
};

int MyClass::s_Counter{ 0 };

MyClass CopyMyClass(MyClass parameter)
{
    return parameter;
}

int main()
{
    auto object1 = MyClass();

    {
        auto object2 = MyClass();
    }

    auto object3 = MyClass();
    auto object4 = CopyMyClass(object3);

    return 0;
}

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