Question
What is a pointer on pointer?
Answers
It’s a pointer variable which can hold the address of another pointer variable. It de-refers twice to point to the data held by the designated pointer variable.

Eg: int x = 5, *p=&x, **q=&p;

Therefore ‘x’ can be accessed by **q.



Distinguish between malloc() & calloc() memory allocation.

Both allocates memory from heap area/dynamic memory. By default calloc fills the allocated memory with 0’s.   Your Comment




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