Five Function Calculator

Five Function Calculator is a simple calculator app built using SwiftUI. It supports basic arithmetic operations, a clean interface, and responsive layout optimized for iPhone devices.

🚀 Features

• Basic operations: +, −, ×, ÷, %
• Sign toggle: +/-
• Decimal input
• Clear (AC) functionality
• Clean, minimal design with dynamic layout
• Result formatting (e.g., 3 instead of 3.0)

🧠 Logic Overview

• Calculator buttons are defined using an enum (CalcButton) for easy layout and styling.
• The core calculation logic is handled inside the didTap(button:) function.
• Operations are represented via an Operation enum and executed based on the current state.
• UI is rendered using a grid-like structure of buttons via ForEach loops.
• Special formatting is added to display a clean value without unnecessary decimal points.

📱 Screens

• Top display shows current input and active operation.
• Calculator buttons are styled and spaced consistently.
• 0 button spans two columns for better UX.

🔧 Requirements

• Xcode 14 or later
• iOS 15+
• Swift 5+

🛠 How to Build

1. Open 5FunCalc.xcodeproj in Xcode.
2. Select your target device or simulator.
3. Press Cmd + R to build and run the app.

✅ To-Do / Improvements

• Add scientific calculator functions (square root, power, etc.)
• Implement haptic feedback
• Add landscape support
• Save recent calculations
• Dark/light mode toggle

📄 License

MIT License — feel free to use and modify!

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