Social Graph – Unique Ownership C++

A small modern C++ project that models a social network using a clear and safe ownership design.

Overview

The project implements a social graph where people can form bidirectional friendships.
All objects are managed by a central SocialNetwork, ensuring explicit lifetimes and no hidden ownership.

Key Design Decisions

• Single ownership model using std::unique_ptr
• ID-based references for friendships (no shared_ptr / weak_ptr)
• Explicit bidirectional relationships controlled by SocialNetwork
• Full separation between domain logic and I/O
• Const-correct APIs that return data instead of printing

Features

• Add and remove people
• Create friendships safely
• Automatic cleanup of relationships when a person is removed
• Query friend lists and counts

Project Structure

SocialGraph/ ├── main.cpp ├── Person.h / Person.cpp ├── SocialNetwork.h / SocialNetwork.cpp └── Types.h

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Build & Run

Compile with a C++20-compatible compiler:

g++ -std=c++20 main.cpp Person.cpp SocialNetwork.cpp -o SocialGraph
./SocialGraph
Why this project
This project demonstrates modern C++ best practices:
explicit ownership, safe object relationships, clean architecture, and maintainable APIs.
It reflects patterns used in real-world systems such as entity graphs and centralized managers.

Author
Developed as a learning and portfolio project in modern C++.