C language Programs

This repository contains a collection of C programs covering basic to advanced concepts, including arithmetic operations, loops, recursion, number manipulations, and pattern printing. Each program is well-documented for easy understanding and learning.

A command-line Address Book Management System built in C with a modular design. It supports adding, searching, editing, and deleting contacts with strong input validation for name, phone, and email. Contacts are stored persistently in a CSV file, and the system includes features like emergency contact support and auto-generated contact IDs.