It is best practice to free anything we malloc immediately after the last use of that pointer. Where should we add free invocations in the following code?int *unsorted (int *array, int length) {int *a2 = calloc(length, sizeof(int));int *a3 = calloc(length, sizeof(int));for(int i=0; i

The calloc() method is used to allocate memory dynamically in form of multiple blocks of specified…

int *unsorted (int *array, int length) { int *a2 = calloc(length, sizeof(int)); int *a3 = calloc(length, sizeof(int)); for(int i=0; i

int unsorted (int array, int length) { int a2 = calloc(length, sizeof(int)); int a3 = calloc(length, sizeof(int)); for(int i=0; i

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

It is best practice to free anything we malloc immediately after the last use of that pointer. Where should we add free invocations in the following code?
int *unsorted (int *array, int length) {
int *a2 = calloc(length, sizeof(int));
int *a3 = calloc(length, sizeof(int));
for(int i=0; i<length; i+=1) a2[i] = array[i];
}
sort_array(a2);
return a3;
// position 1
Therefore, we should free (a3) in which position?
A. position 1
B. position 2
C. position 3
D. position 4
E. position 5
F. position 6
G. We should not free(a3) in this function
// position 2
// position 3
for(int i=0; i<length; i+=1) a3[i] = (array[i]
// position 4
!= a2[i]);
// position 5
// position 6

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