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Possible Duplicate:
what is the difference between const int*, const int * const, int const *
What is the difference between
A const * pa2 = pa1;
and
A * const pa2 = pa1;
(I have some class A for example).
Read the type from right to left:
pa2is a pointer to a read-only A (the object may not be changed through the pointer)pa2is a read-only pointer to A (the pointer may not be changed)This does not mean that A cannot change (or is actually constant) const is misleading, understand it always as read-only. Other aliased pointers might modify A.