On 26 November 2013 13:17, Parmenides wrote: > Hi Wakely, > > Thanks for your reply. The code has gotten compiled successfully with > both compliers. I wonder what is the difference between 'Int &' and > 'const Int &'. That is a basic C++ question, so is not suitable for this mailing list. See http://www.parashift.com/c++-faq/ref-to-const.html > Why the former fails, while the latter causes the > conversion from an 'int' to an 'Int' object? Again, this mailing list is not the right place to try and learn C++. The conversion from int to Int creates a temporary object, and temporary Int objects cannot bind to Int& references, they can only bind to const Int& reference. That's how C++ works.
