C++ Library Integration with Python

This project demonstrates how to integrate a C++ shared library with a Python application using ctypes.

Files

• lib.cpp: Contains the C++ code for the shared library.
• app.py: Python script that loads and uses the shared library.
• readme.md: This file.

Building the C++ Library

Windows

To compile the C++ code into a DLL on Windows, use the following command:

g++ -shared -o lib.dll lib.cpp

Linux

To compile the C++ code into a shared object on Linux, use the following command:

g++ -shared -o lib.so lib.cpp

Running the Python Script

Ensure the compiled shared library (lib.dll on Windows or lib.so on Linux) is in the same directory as app.py. Then, run the Python script:

python app.py

Functions

The C++ library provides the following functions:

• int add(int a, int b): Returns the sum of a and b.
• int sub(int a, int b): Returns the difference of a and b.
• int mul(int a, int b): Returns the product of a and b.
• int divide(int a, int b): Returns the quotient of a and b.

Example Output

1 + 2 = 3
4 * 5 = 20
6 - 3 = 3
10 / 2 = 5

Notes

• Ensure you have the necessary compiler and Python environment set up.
• Modify the path to the shared library in app.py if it is not in the same directory.