Vehicle Management System

The Vehicle Management System is a menu-driven console application built in pure C (C99) with zero dependencies. It manages up to 100 vehicle records across 5 types — Car, Bike, Truck, Bus, and Electric Vehicle — using structs and static arrays. The codebase is fully modular with 11 files coordinated through vehicle.h, separating add, show, search, update, delete, filter, summary, billing, and undo logic. It supports full CRUD with auto-generated IDs (V001…), cloning, 6-way search, multi-condition filtering, and targeted plus bulk partial updates. Advanced features include 5 statistical summary reports, grouped/EV-only display modes, and a command-based single/bulk delete system. A tiered billing engine calculates service charges by engine capacity, seats, battery, and vehicle age with validation and retry policies. A single-level undo system can roll back the last add, update, or delete, while strict input validation keeps all records consistent. The program runs in an infinite validated menu loop via GCC and exits only on user request, making it a clean demo of structured programming and manual record handling.

• Modular Add with Cloning Auto-generated IDs with type-specific validation for Bike, Car, Truck, Bus and EV plus one-click cloning.
• Smart Display and 6-Way Search Grouped, EV-only and full list views with fast search by ID, type, model, brand, year and fuel.
• Flexible Update System Single-record edit plus partial bulk update for matching brands, types and engine ranges.
• Command-Based Bulk Delete Delete by ID, by brand, by year or by condition with safe array shifting and integrity checks.
• 5-Report Summary Analytics Type distribution, year range, average engine, brand frequency and EV battery statistics in O(n).
• Tiered Billing plus Undo Safety Engine, seat and battery based service charges with age surcharge and single-level rollback for add, update and delete.