[kragen]

You commented out your entire function body and the closing }. Also, on 32-bit platforms, it doesn't stop working at 65535.

[captaincrunch]

just a formatting issue on my side, there were \n.

[archargelod]

This website eats newlines, unless you double them (one of the annoying features of markdown). You can use codeblocks by putting 4 spaces before each line:

    int main() {
        // this should be properly formatted
        return 0;
    };

[kragen]

If you fix it, other people can test your code without having to fix the syntax themselves first.