How to Use C Playground
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1. Write C Code
Type your C program using standard C11 syntax and the standard library.
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2. Compile and Run
Click Run or press ⌘↵. Judge0 compiles with GCC and executes your program.
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3. Read Output
Compiler errors and program output appear in the Output panel.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
Which C standard is used?
GCC compiles with C11 on the Judge0 CE sandbox.
Can I use external libraries?
Only the C standard library (stdio.h, stdlib.h, string.h, math.h, etc.) is available.
Is there a time or memory limit?
Yes. The Judge0 sandbox enforces execution time and memory limits to prevent infinite loops.
Is my code private?
Code is submitted to the public Judge0 CE API. Avoid pasting sensitive data.