C to PDF Converter

A web-based tool that allows users to compile and execute C programs, interact with them via a terminal-like interface, and export the code along with the output to a well-formatted PDF.

Live Site

https://c-to-pdf.onrender.com

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Features

• Upload .c files via a simple web interface.
• Compile C code using gcc with error feedback if compilation fails.
• Terminal-like interface for runtime input and real-time output.
• Export a PDF that includes:
  • Student name, roll number, and date
  • The original C source code
  • The output of the program
  • Proper formatting with a two-column layout
  • Page numbers on each page
• Automatic deletion of temporary files after usage.

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How It Works

1. Upload a .c file.
2. The server compiles the file using GCC.
3. If compilation is successful, a terminal session is created using a pseudo-terminal.
4. Input is sent from the browser to the process, and output is streamed back.
5. Once the output is ready, a PDF can be generated with all the content.
6. PDF is served for download and deleted after delivery.
7. All .c and .out files are removed after PDF generation to ensure cleanup.

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Technology Stack

• Backend: Python, Flask, Flask-SocketIO, Eventlet
• Frontend: HTML, JavaScript, Socket.IO
• PDF Generator: ReportLab
• Compiler: GCC
• Hosting: Render.com