Passing Objects by Reference and By Pointer

http://people.cs.vt.edu/~kafura/cs2704/reference.html


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   window.Display(box1);  // uses by reference
   window.Display(box2);  // uses by pointer
   window.Display(&box3);  // uses by pointer
   window.Display(*box4);  // uses by referen

http://stackoverflow.com/questions/410593/pass-by-reference-value-in-c