How reference share the memory address
<p>i was reading what is difference b/w pointer variable and reference variable in c++ <a href="http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c">here's</a>. i got a point from that <strong>whereas a reference shares the same memory address but also takes up some space on the stack.</strong>.
what does it mean that it share the same address space.please clear the how reference  has been implemented in c++.</p>
