delete operator in C++ - Mini Project: Build & Apply

Using the delete operator in C++

📖 Scenario: Imagine you are managing memory manually in a small C++ program. You create a dynamic integer variable but need to free its memory properly to avoid waste.

🎯 Goal: You will create a dynamic integer pointer, assign a value, then use the delete operator to free the memory, and finally print a message confirming deletion.

📋 What You'll Learn

Create a dynamic integer pointer called ptr using new and assign it the value 10

Create a boolean variable called isDeleted and set it to false

Use the delete operator on ptr and set isDeleted to true

Print "Memory deleted: true" exactly

💡 Why This Matters

🌍 Real World

Manual memory management is important in systems programming, embedded devices, and performance-critical applications.

💼 Career

Understanding how to allocate and free memory safely is a key skill for C++ developers working on software that controls hardware or requires efficient resource use.

1

Create a dynamic integer pointer

Create a dynamic integer pointer called ptr using new and assign it the value 10.

C++

// Your code here

Need a hint?

Use new int(10) to allocate memory and assign 10.

2

Create a boolean flag for deletion

Create a boolean variable called isDeleted and set it to false.

C++

int* ptr = new int(10);
// Your code here

Need a hint?

Use bool isDeleted = false; to create the flag.

3

Delete the dynamic memory and update flag

Use the delete operator on ptr and then set isDeleted to true.

C++

int* ptr = new int(10);
bool isDeleted = false;
// Your code here

Need a hint?

Use delete ptr; to free memory and then isDeleted = true;.

4

Print confirmation message

Print the message "Memory deleted: true" exactly using std::cout.

C++

int* ptr = new int(10);
bool isDeleted = false;
delete ptr;
isDeleted = true;
// Your code here

Need a hint?

Use std::cout << "Memory deleted: true" << std::endl; to print.