Thank you so much for such a great tutorial. However, I would like to use this section to indicate what is consistently missing in this tutorial. When discussing class, I think many reader will be more interested in object in the heap than stack.

***
In the above example, because we declared a Date object, but there is no default constructor, m_nMonth, m_nDay, and m_nYear were never initialized. Consequently, they will hold garbage values. Generally speaking, this is why providing a default constructor is almost always a good idea:
***

will be true for stack object but it will not be true for heap object. For example:

#include

using namespace std;

class Date
{
private:
int m_nMonth;
int m_nDay;
int m_nYear;
public:
int getMonth(){return m_nMonth;}
int getDay(){return m_nDay;}
int getYear(){return m_nYear;}
};

int main()
{
Date cDate;
// cDate’s member variables now contain garbage
// Who knows what date we’ll get?

cout << cDate.getMonth() << "/" << cDate.getDay() << "/" << cDate.getYear() << endl;
Date *pDate = new Date();
cout <getMonth() << "/" <getDay() << "/" <getYear() << endl;

return 0;
}

Output:
-858993460/-858993460/-858993460
0/0/0

I found this tutorial purposely omit this distinction. Is there reason for it. However, no matter what. It is really really the greatest c++ tutorial ever. Thank you so much Alex for your hard work.

Thanks.

Thanks,
Vineet

I assume that it is necessary for constructors?

Tom

Anyone who says computers do exactly what you tell them to do…
+1 to that. :)