Are there standard formats for comments within code? [closed]

Answer 1

/*
 * Brief summary of what's going on.
 */
int code_that_goes_on(int c)
{
     /* and then if I have to remark on something inside... */
     return 0;
}

99% of compilers will support // comments, which is awesome, but that 1% still exists, and it's not too difficult to make life livable for them.

EDIT: The Delphi comment is a bit obtuse, but does point out a real deficiency. I intend this to be a C-specific answer.