iOS Calculator App

[Watch indepth tutorial here:][https://youtu.be/KfGaLM9lg_M]

Features:

• Basic Operations: Supports addition, subtraction, multiplication, and division.
• Number Input: Handles decimals, prevents invalid entries like multiple dots.
• Live Expression Evaluation: Calculates results with proper formatting and safety checks.
• Percentage & Negation: Convert values to percentages or toggle positive/negative signs.
• Delete & Clear: Easily correct inputs or reset the calculator.
• Comma Formatting: Automatically formats numbers with commas for better readability.
• Responsive Font Size: Adjusts display font size based on input length.

![Image preview]