Professional Calculator Application

Overview

Professional C calculator application demonstrating robust programming practices, comprehensive error handling, and mathematical operations with proper validation.

Project Structure

Version-Control-GitHub-and-C-Programming-Bug-Fixes/
├── src/
│   └── calculator.c       # Main calculator implementation
├── bin/                   # Compiled executable
├── Makefile              # Build configuration
└── README.md             # This file

Features

Mathematical Operations

• Addition - Safe addition with overflow detection
• Subtraction - Safe subtraction with overflow detection
• Multiplication - Safe multiplication with overflow detection
• Division - Division with zero-division protection
• Power - Exponentiation with domain validation
• Square Root - Square root with negative number protection

Safety Features

• Comprehensive input validation
• Overflow and underflow detection
• Domain error checking (negative square roots, etc.)
• Buffer overflow protection
• Graceful error handling

User Interface

• Professional menu system
• Clear operation prompts
• Detailed error messages
• Interactive operation loop

Building the Project

Prerequisites

• GCC compiler (C11 standard)
• Make utility
• Math library (libm)

Compilation

# Build the calculator
make all

# Or specifically
make calculator

# Clean build artifacts
make clean

Usage

Running the Calculator

./bin/calculator

Example Session

 ********************************
**     Professional Calculator   **
**        BCS Edition            **
**      Author: Jaden Mardini    **
 ********************************

Available Operations:
1. Addition
2. Subtraction
3. Multiplication
4. Division
5. Power (x^y)
6. Square Root
7. Exit

Enter operation number (1-7): 1

=== Addition ===
Enter first number: 15.5
Enter second number: 24.3
Result: 15.500000 + 24.300000 = 39.800000

Technical Features

Error Handling

• Input validation for all user inputs
• Mathematical domain checking
• Overflow/underflow detection
• Clear error messages with guidance

Code Quality

• C11 standard compliance
• Professional naming conventions
• Comprehensive documentation
• Modular function design

Mathematical Safety

• Proper floating-point arithmetic
• Domain validation for all operations
• Infinity and NaN detection
• Precision-aware calculations

Improvements from Original

Bug Fixes

• Fixed inconsistent data types (double vs int)
• Added proper input validation
• Implemented overflow protection
• Added missing return type for main()

Enhancements

• Expanded from 2 to 6 mathematical operations
• Professional user interface
• Comprehensive error handling
• Interactive operation loop
• Safe input reading with buffer protection

Code Quality

• Professional documentation
• Consistent coding style
• Modular design
• Proper memory management

Design Principles

1. Safety First - All operations validated for safety
2. User Experience - Clear prompts and error messages
3. Robustness - Handles all edge cases gracefully
4. Maintainability - Clean, documented code
5. Professional Standards - Industry best practices

License

This project is for fun ;)