Windows Scientific Calculator

A modern scientific calculator built with C, using the Windows API and the tinyexpr library for expression parsing and evaluation.

It supports arithmetic, trigonometric, logarithmic, exponential, and power operations — all through a clean graphical interface.

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📌 Features

• ✅ Basic operations: +, -, ×, ÷, ^
• 🧮 Trigonometric functions in degrees: sin, cos, tan, asin, acos, atan
• 🧠 Scientific functions: sqrt, log, ln, exp, 10^x
• 🎯 Constants support: pi, e
• 🖱️ Interactive GUI buttons with color-coded design:
  • 🔸 Orange for numbers
  • ⚫ Black for scientific functions
  • 🟩 Green for clear/delete
  • 🔘 Gray for operators

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🖥️ How to Run (on Windows)

🛠️ Compile:

Using MinGW:

gcc calculator.c tinyexpr.c -o calc.exe -lgdi32

▶️ Run:

.\calc.exe

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🧾 Dependencies

• C compiler (tested with GCC/MinGW)
• tinyexpr.c and tinyexpr.h (included)
• Windows OS (uses Win32 API)

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🖼️ Screenshots

1️⃣ Main Calculator Interface

This is the main calculator window showing the button layout and user-friendly interface.

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2️⃣ Matrix Operations

Demonstrates matrix-related functionalities like determinant and cofactor calculations.

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3️⃣ Complex Number Support

Displays calculator handling complex numbers in algebraic form using the 'i' notation.

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📁 File Structure

├── calc.c      # Main source code
├── tinyexpr.c/.h     # Expression parsing library
└── README.md         # Project documentation

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💻 Author

Yousef Hamdy
GitHub
LinkedIn

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📄 License

This project is licensed under the MIT License.