title: Scenarios where we force to use Pointers in c++
body: <p>I had been in an interview and asked to give an example or scenario in CPP where we can't proceed without pointers, means we have to use pointer necessarily.
  I have given an example of function returning array whose size is not known then we need to return pointer that is name of the array which is actually a pointer. But the interviewer said its internal to array give some other example.</p>
  
  <p>So please help me with some other scenarios for the same.</p>