Question

I know it may pointless questions but I just wonder it is possible to use = operator to copy by reference like that

int a, b=5;
a = b;
a = 4;
cout<<b<<endl;

In other words of what I am trying to do is to make this code print 4, instead of 5.
Thanks for any comments…

Answer 1

You can’t do this because you have already declared a as an int.

Either make a a reference (int&) or a pointer (int*) to b.