Question 1

What is ZenCompiler Online Compiler?

Accepted Answer

ZenCompiler Online Compiler is a free, high-performance web-based code editor and execution engine. It allows developers, students, and educators to write, compile, run, debug, and visualize code across 10+ programming languages directly from any browser without installing software.

Question 2

Which programming languages are supported?

Accepted Answer

ZenCompiler currently supports C (GCC 9.2.0), C++ (GCC 9.2.0), Python (3.8.1), Java (OpenJDK 13), JavaScript (Node.js 12), TypeScript (3.7), Go (1.13), Rust (1.40), PHP (7.4), and C# (Mono 6.6), with new language sandboxes added regularly.

Question 3

Can I provide custom STDIN inputs to my programs?

Accepted Answer

Yes. ZenCompiler includes an interactive web terminal and dedicated STDIN input console, allowing you to pass user inputs, test command-line arguments, and interact with your running code in real time.

Question 4

How does the code visualizer and execution tracer work?

Accepted Answer

ZenCompiler features a step-by-step execution visualizer that tracks variable mutations, array modifications, call stack frames, and heap allocations at each execution step, making it ideal for learning data structures and algorithms.

Question 5

Is ZenCompiler Online Compiler completely free to use?

Accepted Answer

Yes. The online compiler, interactive terminal, and code visualization tools are completely free to use with zero paywalls, no mandatory signup required to run code, and unlimited daily executions.