you have to do your project using DSA concepts in C++. Not in any other language. Your projects will not be GUI based. And to store data use the .txt file or the concept

Banking record System Bookshop Management System Bus Reservation system Airport Flight Schedule System Payroll Management System Phone Book Management System Railway Station Management System Sales Management System Student grades database System Student ID Card Issue system Super Market Billing System Telephone Directory Careem Application Notepad Hospital Management system Medical Shop Inventory System (you can choose any one project from these)