Course/Module 8/Topic 3 of 3Advanced

Pointers & Memory Management - Practice

Put your pointers & memory management skills to the test with practical exercises and challenges.

50 min•By Priygop Team•Last updated: Feb 2026

Hands-On Practice

Practice makes perfect! In this section, you'll work through practical exercises that reinforce the concepts covered in this module.

Exercises

Exercise 1: Apply basic pointers & memory management concepts
Exercise 2: Solve intermediate-level challenges
Exercise 3: Build a mini-project using pointers & memory management
Exercise 4: Debug and fix common issues

Practice: Pointers & Memory Management

Practice: Pointers & Memory ManagementC

C Editor

✓ ValidTab = 2 spaces

#include <stdio.h>
#include <stdlib.h>

int main() {
    int n = 5;
    int *arr = (int*)malloc(n * sizeof(int));
    
    for (int i = 0; i < n; i++) arr[i] = (i + 1) * (i + 1);
    
    printf("Squares: ");
    for (int i = 0; i < n; i++) printf("%d ", arr[i]);
    printf("\n");
    
    // Reallocate
    arr = (int*)realloc(arr, 10 * sizeof(int));
    for (int i = n; i < 10; i++) arr[i] = (i+1)*(i+1);
    printf("Extended: ");
    for (int i = 0; i < 10; i++) printf("%d ", arr[i]);
    
    free(arr);
    return 0;
}

Output

Click ▶ Run to see the result

Edit the code on the left, then click Run

C|22 lines|525 chars|✓ Valid syntax

UTF-8

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