Reference variable
There is a small point that I don't really understand about reference variable. For example, if we declare b as a reference to a, how many bytes does the program below cost? 8 bytes for two ints or 4 bytes?
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Answer: you should not care. C++ provides references as abstraction and compilers can implement them in any way they want. Obviously all proper compilers aim to lessen cost of them.
Technicalities: in this case b is simply an alias for a and any compiler worth using will not allocate any space for it. In fact you would not be able to tell if that reference existed at all when studying resulting assembly.
Technicalities: in this case b is simply an alias for a and any compiler worth using will not allocate any space for it. In fact you would not be able to tell if that reference existed at all when studying resulting assembly.
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