Answer Posted / vadivel t

Simple definitions:

Lvalue - is value which can be modified(it cannot be a
constant). And it can act as Rvalue too.

Rvalue - is value which can be able to fetch from the
memory, propably a constant. It can also act as Lvalue(if
it is not a constant).

Dont be confused... Lets hav example.

Example:
int a = 0, b = 10;

1.Rvalue
if(a)
{
...
...
...
}

here a is RValue(cos, as per definition, the value is able
to fetch from the memory)

2.One variable acting as L and R value
a = a + b;

here a + b; evaluated fist.. lets analise...
First a and b has to be fetched from the memory, by this
time, both will act as a Rvalue(as per definition)....
then a + b result shall be assigned to 'a'. Now 'a' will be
acting as a Lvalue. Cos u able to modify it...

So here 'a' can act as L as well as R value depends on the
situation.

3.a = 10;

Here 10 is Rvalue and 'a' ll act as Lvalue.
Hope u understand clearly.

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