C | Dynamic Memory Allocation | Question 6
Which of the following is true?
(A) “ptr = calloc(m, n)” is equivalent to following
ptr = malloc(m * n);
(B) “ptr = calloc(m, n)” is equivalent to following
ptr = malloc(m * n);
memset(ptr, 0, m * n);
(C) “ptr = calloc(m, n)” is equivalent to following
ptr = malloc(m);
memset(ptr, 0, m);
(D) “ptr = calloc(m, n)” is equivalent to following
ptr = malloc(n);
memset(ptr, 0, n);
Answer: (B)
Explanation: See calloc() versus malloc() for details.
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