🍓
C4 Playground
▊
A four-keyword C compiler + VM, running in JavaScript.
Hello World
Fibonacci
Factorial
Loops & Math
Pointers
?
source.c
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int main() { printf("Hello, C4 world!\n"); printf("Four keywords. One tiny VM.\n"); return 0; }
⚙ Compile
▶ Run
⏭ Step
↺ Reset
Output
Bytecode
VM State
Errors
No output yet — hit ▶ Run and let the VM cook.
Idle