C++ Misconceptions - Common Beginner Mistakes

📌 About This Project

This project demonstrates 3 common misconceptions in C++ that can lead to performance issues, debugging nightmares, and even crashes.
Each misconception is explained with clear examples and code that highlights the issue.

This project is part of a YouTube tutorial covering best practices and common C++ mistakes.

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📂 Project Structure

File	Description
item1_using_std_namespace_is_fine.cpp	Demonstrates why using namespace std; can cause naming conflicts.
item2_post_increment_is_always_fine.cpp	Shows why i++ vs ++i matters, especially for iterators and objects.
item3_uninitialized_pointers_are_not_null.cpp	Explains why uninitialized pointers hold garbage values, not nullptr.
test.bat	Windows batch script to compile and run the selected C++ file.
test.sh	Linux/macOS shell script to compile and run the selected C++ file.

Each example includes comments explaining the misconception and the correct approach.

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🛠️ Requirements

To compile and run these examples, ensure you have:

• g++ (GNU Compiler Collection) with C++17 support
• A Windows or Linux/macOS system
• A terminal or command prompt to compile and execute the code

Check if g++ is installed by running:

g++ --version

If not installed, you can install it using:

🔹 Windows (via MinGW)

1. Download MinGW from MinGW-w64.
2. Install it and add g++ to the system path.
3. Verify installation by running g++ --version.

🔹 Linux/macOS

sudo apt install g++   # Debian/Ubuntu
sudo yum install gcc-c++  # Fedora/CentOS
brew install gcc  # macOS (using Homebrew)

📜 Automated Compilation & Execution

Windows (test.bat)

./test.bat

Linux/macOS (test.sh)

./test.sh

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📺 YouTube Tutorial

This project is part of a YouTube tutorial that explains the code in detail. Watch the video to follow along.

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📜 License

This project is licensed under the MIT License.

Happy coding! 🚀