How to Format Code on Discord

type three "backticks" (not quotes/apostrophes, on QWERTY layout, left of 1-key)
on the same line, type the file extension for that language (c or cpp)
enter your code on a new line and put another three backticks at the end

Example Input

?inline ```cpp
int main() {
return 0;
}
```

?inline

int main() {
    return 0;
}