Calculator 📱

A functional calculator project developed while learning Swift. It focuses on core UIKit elements, basic state management, and simple arithmetic logic.

✨ Features

• Basic Operations: Addition, subtraction, multiplication, and division.
• Advanced Logic: Includes modulus (%) and sign change (+/-) functions.
• Smart Formatting: Uses NumberFormatter for localized decimal separators (comma/point) and digit grouping.

🛠 Technologies

• Language: Swift 5.0+
• Framework: UIKit
• Design Pattern: MVC

💻 Code Highlight: Formatted Display

The app uses a custom NumberFormatter to ensure a professional look for decimal numbers:

private let formatter: NumberFormatter = {
    let formatter = NumberFormatter()
    formatter.minimumFractionDigits = 0
    formatter.maximumFractionDigits = 2
    formatter.numberStyle = .decimal
    return formatter
}()

---