Question

void free(void *p) performs which of the following functions?

(a) returns pointer to allocated space for existing contents of p

(b) de-allocates space to which p points

(c) to abnormally terminate the program

(d) no such function defined in stdlib.h

I have been asked this question by my college director while I was bunking the class.

This intriguing question comes from General Utilities topic in section C Library of C

Answer 1

Correct option is (b) de-allocates space to which p points

Explanation: void free(void *p);

This function de-allocates space to which p points(if p is not NULL).