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The original definition of lvalues and rvalues from the earliest days of C is as follows: An lvalue is an expression e that may appear on the left or on the right hand side of an assignment, whereas an rvalue is an expression that can only appear on the right hand side of an assignment.he original definition of lvalues and rvalues from the earliest days of C is as follows: An lvalue is an expression e that may appear on the left or on the right hand side of an assignment, whereas an rvalue is an expression that can only appear on the right hand side of an assignment.
I have read that chapter, and I believe I can correctly distinguish between lvalues and rvalues. However before I had read good C++ books and/or the standard, I used to think that an lvalue is something that can stand on the left side of an assignment, and an rvalue is something which cannot.Obviously there are numerous counterexamples to this naive definition. have read that chapter, and I believe I can correctly distinguish between lvalues and rvalues. However before I had read good C++ books and/or the standard, I used to think that an lvalue is something that can stand on the left side of an assignment, and an rvalue is something which cannot.