🐱 Meow-on-Signal

A fun little C project to explore signals and inter-process communication (IPC).
This program prints a "Program is Running..." message in a loop, reacts to Ctrl+C by playing a sound, and can be exited cleanly by pressing q.

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🎥 Demo Video

(Click the image above to watch the video on YouTube.)

✨ Features

• Runs continuously, printing a message.
• Handles SIGINT (Ctrl+C) → plays meow.mp3 instead of terminating.
• Press q + Enter to quit gracefully.
• Uses SDL2 and SDL2_mixer for audio playback.
• Cross-platform exploration (tested on Windows MSYS2/MinGW64).

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🛠️ Requirements

• MSYS2 (for Windows users)
• SDL2 development libraries
• SDL2_mixer development libraries
• GCC compiler (mingw-w64-x86_64-gcc)

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⚙️ Build & Run

Compile

gcc -o program_a program_a.c play_audio.c -lmingw32 -lSDL2main -lSDL2 -lSDL2_mixer

Run

./program_a

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🎮 Usage

• The program prints:

  Process ID: 18408
  Press 'q' + Enter to quit
  Press Ctrl+C to wake up the cat
  Program is Running...
  

• Press Ctrl+C → Plays meow.mp3 🐱

• Press q + Enter → Exits cleanly.

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📂 Project Structure

.
├── program_a.c        # Main program (signal handling + message loop)
├── play_audio.c       # Audio utility functions
├── play_audio.h       # Audio function declarations
├── meow.mp3           # Example sound file (not included in repo)
└── README.md

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📖 MSYS2 Setup on Windows

Click to expand setup instructions

1. Install MSYS2

• Download installer from https://www.msys2.org/
• Run installer and let it update.

2. Open MSYS2 MinGW64 terminal

• Start Menu → search MSYS2 MinGW64

• Your prompt should look like:

  username@PC MINGW64 ~
  

3. Update packages

pacman -Syu

(Close and reopen MSYS2 MinGW64 terminal if asked.)

4. Install dependencies

pacman -S mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL2 mingw-w64-x86_64-SDL2_mixer

5. Navigate to your project

cd /c/projects/githubprojects/Meow/program_a

6. Compile & Run

gcc -o program_a program_a.c play_audio.c -lmingw32 -lSDL2main -lSDL2 -lSDL2_mixer
./program_a

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🙏 Credits

This project was inspired by hands-on experiments with signals and SDL2. It is adapted from the following repository:

Original Repository Template:

• Repo: program_a
• Author: Jorge Villalta
• Youtube Video : Explanation About Signals

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