Question

n3035 says: (2010-02-16)

A variable is introduced by the declaration of an object. The variable’s
name denotes the object.

n3090 says: (2010-03-29)

A variable is introduced by the declaration of a reference other than a
non-static data member or of an object. The variable’s name denotes the
reference or object.

n3242 says: (2011-02-28)

A variable is introduced by the declaration of a reference other than a
non-static data member or of an object. The variable’s name denotes the
reference or object.

CAN any one explain the difference interms (or) with the help of an program(exactly what it say’s)

this is the statement from ISO standard C++

I seen this link :

Why was the definition of a variable changed during the development of C++11?

but this is not(full meaning) my question …

Answer 1

Consider:

int x = 42;
int& rx = x;

x is a variable; should rx also be considered a variable? Many of the Standard’s requirements about non-reference variables also apply to references. It’s obviously a pain to have to stipulate “variables or references to variables” constantly throughout the Standard, so if the definition of a variable can include references – perhaps with the occasional “except for references”, then the Standard may be – on balance – simplified. It looks to me like the revisions were exploring this balance.