How can we read/write Structures from/to data files?
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How would you find out if a linked-list is a cycle or not?
Why do we need function?
Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
why we cant create array of refrences
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Explain the difference between using macro and inline functions?
What are register variables?
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List the merits and demerits of declaring a nested class in C++?
When does a 'this' pointer get created?
What are structures and unions?
STL 
