Here are some project ideas to Practice C++ Programming -

1. Calculator Application: Create a command-line calculator with support for basic arithmetic operations and more advanced features like square roots and trigonometric functions.

2. Student Record System: Build a program to manage student records, including details like names, grades, and attendance.

3. Task Tracker: Create a task tracker application that allows users to add, view, and complete tasks. Use file handling to store task data.

4. Simple Game: Develop a text-based or console-based game like Tic-Tac-Toe, Hangman, or a simple maze solver.

5. Inventory Management System: Build an inventory management system for a small store. Track product details, prices, and stock levels.

6. Chat Application: Create a basic command-line chat application that allows users to send messages to each other using sockets for networking.