Vaclav, we ask people to post all their code, so that we can see that they've correctly declared all the variables they reference - that they're of the correct type and are initialised. We can't see that sort of stuff from snippets.
We ask them to use code tags so that the forum software doesn't mangle things like subscripts into italics, obscuring the meaning of the code.
We ask them to "document" their problem, which is usually as simple as posting a link that their particular device or the original source of their code so that we can all be sure we're all singing from the same hymn sheet.
Really, it is in the poster's best interest to follow the very simple posting guidelines so that they will get the help they want as quickly as possible - this simple fact is one you seem to have considerable difficulty understanding, so that's why I'm explaining it to you. Again.
We ask people what their code is for so that we can offer advice about different ways of achieving what it is they want to do.
We ask people not to cross-post, simply because it is counter-productive, and reduces the likelihood that people will offer their time in the future.
Blink without delay - the answer to many first time questions here; you should read it, work through it and thoroughly understand it, it'll improve your understanding of simple micro controller programming no end.
We ask for people not to wade in on subjects they clearly have no knowledge of, like, say, PWM control of servos (aka "voodoo electronics"), so that they don't dilute the help of those who do know what they're talking about.
I can't speak for administrators, but I'm pretty sure the moderators would agree.