C Code Visualizer
Write C code. See how it works. Watch variables, memory, conditions, loops, and pointers change as your C program runs.
C Code Execution Visualizer
Watch variables, RAM memory, conditions, and loops change as your program executes step by step
a = 100) to see the visualization update automatically!Line-by-Line Execution
Step through your C code line by line (⏮ / ⏭) and watch expressions evaluate step by step in real time.
RAM Memory & Pointers
Inspect RAM allocation slots, hex memory addresses (0x7FFE10), pointer arrows (p ➔ &a), and contiguous array grids.
Beginner-First Explanations
"What's Happening?" panel breaks down every variable assignment, condition check, and loop iteration in plain English.
Frequently Asked Questions
What is C Code Visualizer?
C Code Visualizer is an interactive execution debugger and memory visualizer that allows you to see how C code executes inside computer memory line by line.
How does C Code Visualizer differ from an online C compiler?
A traditional online C compiler only accepts code and returns final text output. C Code Visualizer shows the complete internal execution process: variables, RAM addresses, expression evaluation, condition checks, and loop counters.
How does it visualize memory and pointers?
It displays RAM memory boxes with variable names, data types, stored values, hex memory addresses (e.g. 0x7FFE10), and pointer arrows pointing to target memory addresses.
Can I step through C execution line by line?
Yes! Click the "⏭ Step" button to execute your program one line at a time or click "▶ Run All" to watch full automated execution playback.
Is C Code Visualizer free to use?
Yes! It runs 100% free directly inside your browser with zero installation or account registration.