ScientificCalculator/README.md

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ScientificCalculator

A feature-rich scientific calculator implemented in C++ that provides advanced mathematical operations and a user-friendly interface.

Features

• Basic Arithmetic Operations: Addition, subtraction, multiplication, and division
• Advanced Mathematical Functions:
  • Trigonometric functions (sin, cos, tan)
  • Inverse trigonometric functions (asin, acos, atan)
  • Logarithmic functions (log, log10)
  • Exponential functions (exp, pow)
  • Square root and power operations
• Memory Functions: Store, recall, and clear memory values
• Error Handling: Comprehensive error detection and user-friendly error messages
• Clean Interface: Simple and intuitive command-line interface

Requirements

• C++ compiler (C++11 or later recommended)
• Standard C++ library only (no external dependencies)

Building the Project

Prerequisites

• C++ compiler (g++, clang++, or MSVC)
• CMake (optional, for automated builds)

Compilation

Using g++ (Linux/macOS)

g++ -std=c++11 -o ScientificCalculator main.cpp calculator.cpp

Using Makefile

make

Using CMake

mkdir build
cd build
cmake ..
make

Usage

1. Run the executable:

   ./ScientificCalculator
   

2. Basic Operations:

   Enter an expression or command: 5 + 3
   Result: 8
   

3. Advanced Functions:

   Enter an expression or command: sin(30)
   Result: 0.5
   

4. Memory Operations:

   Enter an expression or command: memstore 10
   Enter an expression or command: memadd 5
   Enter an expression or command: memrecall
   Result: 15
   

5. Exit the calculator:

   Enter an expression or command: exit
   

Supported Operations

Basic Arithmetic

• + : Addition
• - : Subtraction
• * : Multiplication
• / : Division
• ^ : Power operation

Trigonometric Functions

• sin(x) : Sine
• cos(x) : Cosine
• tan(x) : Tangent
• asin(x) : Arcsine
• acos(x) : Arccosine
• atan(x) : Arctangent

Logarithmic and Exponential Functions

• log(x) : Natural logarithm
• log10(x) : Base-10 logarithm
• exp(x) : Exponential function
• sqrt(x) : Square root
• pow(x, y) : Power function

Memory Functions

• memstore x : Store value in memory
• memadd x : Add value to memory
• memsubtract x : Subtract value from memory
• memrecall : Recall memory value
• memclear : Clear memory

Project Structure

ScientificCalculator/
├── main.cpp              # Main program entry point
├── calculator.cpp        # Core calculator implementation
├── calculator.h          # Calculator class header
├── README.md             # This file
└── Makefile              # Build configuration (optional)

Code Structure

Calculator Class

The main calculator functionality is implemented in the Calculator class, which provides:

• Expression parsing and evaluation
• Mathematical function implementations
• Memory management
• Error handling

Key Components

• Expression Parser: Handles input parsing and tokenization
• Evaluator: Processes mathematical expressions and computes results
• Function Library: Implements all supported mathematical functions
• Memory Manager: Handles storage and retrieval of memory values

Error Handling

The calculator includes comprehensive error handling for:

• Invalid expressions
• Division by zero
• Domain errors (logarithm of negative numbers, etc.)
• Memory overflow/underflow
• Syntax errors

Error messages are user-friendly and provide guidance for correct usage.

Examples

Basic Calculations

Enter an expression or command: 15 * 4 + 10 / 2
Result: 65

Enter an expression or command: 2 ^ 10
Result: 1024

Scientific Calculations

Enter an expression or command: sin(45) + cos(45)
Result: 1.41421

Enter an expression or command: log(100) * exp(2)
Result: 18.4207

Memory Operations

Enter an expression or command: memstore 25
Enter an expression or command: memadd 15
Enter an expression or command: memrecall
Result: 40

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Test thoroughly
5. Submit a pull request

License

This project is open source and available under the MIT License.

Future Enhancements

• Graphical user interface (GUI) implementation
• Additional mathematical functions (hyperbolic functions, statistical functions)
• Expression history and recall
• Custom variable storage
• Unit conversion capabilities
• Complex number support

Contact

For questions, suggestions, or contributions, please open an issue on the GitHub repository.

Scientific Calculator

A simple scientific calculator built in Python.

Features

• Basic arithmetic operations
• Trigonometric functions
• Logarithms and exponentials

How to Use

1. Clone the repo: git clone <repo-url>
2. Run the calculator: python calculator.py

Credits

Inspired by Python calculator tutorials.

Disclaimer

For learning purposes.

e44406f (Improve project: code quality, docs, and structure)