This C-based console application simulates an Electricity Billing System, allowing users to calculate and pay their energy bills based on consumption, property size, and duration of use. The project emphasizes structured programming using functions, user input validation, and real-world billing logic, tailored for academic purposes.

This is a simple energy consumption management system written in C. Users can register, log in, input their monthly electricity usage, calculate the cost based on consumption, and pay their bills. The program also identifies the most expensive paid month. It supports up to 20 users and runs through a console-based menu.