Question

Which of the following header files must necessarily be included to use dynamic memory allocation functions?

(a) stdlib.h

(b) stdio.h

(c) memory.h

(d) dos.h

Answer 1

Correct answer is (a) stdlib.h

Easiest explanation - stdlib.h is a header file which stands for the standard library. It consists of the declaration for dynamic memory allocation functions such as malloc(), calloc(), realloc() and free.