1
Custom Input (stdin)
scanf • cin • input()
Welcome to VAB-CODE (vab-code)! Select a language, write your code, and hit Run.
VAB-CODE runs code directly in your browser using client-side WebAssembly technology. Practice Python 3.11 with full support for scientific packages (NumPy, Pandas, Matplotlib), ANSI C99, ISO C++17 with STL, and Java 17 OOP without needing any desktop installation or remote server dependencies.
Designed for computer science students and developers. Includes coding challenges covering Data Structures (Linked Lists, Binary Trees, Stacks, Queues), Sorting Algorithms (Quick Sort, Merge Sort, Bubble Sort), and Computer Graphics with graphics.h canvas rendering.
Your academic code and projects remain 100% private on your own device. VAB-CODE operates with zero backend code logging, storing your snippets only in browser localStorage. Export printable Lab Record PDFs and share code with peers effortlessly.
Yes. VAB-CODE is 100% free forever for all college students, faculty members, and self-taught developers. There are no subscriptions, paywalls, or hidden compile limits.
Absolutely. You can write, test, and debug code directly, and use the "Lab PDF" button to export a university-formatted experiment sheet complete with Aim, Algorithm, Source Code, Output, and Evaluation marks table ready to print.
VAB-CODE compiles Python via Pyodide WebAssembly, runs web applications in isolated sandbox iframes, and transpiles C, C++, and Java syntax through client-side simulation engines directly on your machine's CPU.