C Editor

Output

Memory

Press ▶ Run (Cmd+Enter). Type into the prompt below while the program runs.

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Click 👁 Visualize to step through your program and watch variables & pointers.

highlighted line = runs next · gold glow = just changed · pointer arrow: ● = the pointer, ▶ = what it points to (hover a pointer to spotlight its arrow) · faded box = freed memory