Playground

Write, run, and see what happens

Pick a starter snippet from any module, edit it, and hit Compile & Run.

This playground does not run a real C compiler. Netlify Functions execute in a serverless environment with no gcc/toolchain available, so the Compile & Run button calls a function that returns a clear explanation, plus a pre-computed output for the default starter snippets so you can see the intended flow end to end.

basics.c

#include <stdio.h>

int main(void) {
    int score = 91;
    float ratio = 3.5f;
    printf("score=%d ratio=%.1f\n", score, ratio);
    return 0;
}

stdin (fed to scanf/fgets)

console

Output will appear here after you run your code.