🔢 Arithmetic Calculator in C

A fully functional command-line based Arithmetic Calculator built using C programming language.
This project demonstrates structured programming, operator mapping using enum and struct, and clean input validation techniques.

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🚀 Features

• Basic Operations (+, −, ×, ÷, %)
• Power & Square Root
• Trigonometric Functions (sin, cos, tan)
• Inverse Trigonometric Functions
• Logarithm (base 10)
• Factorial
• Operator Mapping using enum & struct
• Input Validation using fgets & sscanf
• Clean modular function design

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🛠 Technologies Used

• C Programming
• Standard Libraries:
  • stdio.h
  • stdlib.h
  • string.h
  • math.h
  • ctype.h
  • stdbool.h

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🧠 Key Concepts Implemented

• Function-based modular programming
• Enum for operation handling
• Struct-based mapping table
• Switch-case execution control
• Error handling & validation
• Loop-driven user interaction

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▶ How to Run

1. Compile the program:

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Run:gcc calculator.c -o calculator

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📌 Learning Outcome

This project improved my understanding of:

• Clean code structuring
• Mapping logic implementation
• Handling user input safely
• Designing scalable command-line tools

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👨‍💻 Author

Ashlok Kumar
C Programming Enthusiast