How to arrange the code?

Write an article and then not understand how to properly execute the code below for example it looked like here. The tag of source lang="Language" — I have for some reason not working...
October 8th 19 at 02:00
3 answers
October 8th 19 at 02:02
it seems he knew
October 8th 19 at 02:04
try without specifying the language, just the source, I got so worked
looks like this
for(;;) {
October 8th 19 at 02:06
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Suitable for lighting design code for all conceivable languages. To generate Habarovskogo code check the box "Use font tag (for Habrahabr)".

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