Purpose of empty Class


 
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# 1  
Old 08-22-2008
Purpose of empty Class

class A
{};

int main()
{
A a;
}

What is the purpose of such empty classes in C++?Why is it allowed in the language specification?
# 2  
Old 08-25-2008
It is used as a place holder in the initial phase of development.
I think you should look at the C++ annotations for the more detailed explanation as to why the above class should be valid.
# 3  
Old 08-25-2008
Check the below link for more detail...

http://www.cantrip.org/emptyopt.html
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