why brainfuck code example

Example 1: brainfuck hello world

brainfuck hello world
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.

Example 2: brainfuck examples

++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.

Example 3: what is brainfuck for

Brainfuck is a language that is meant to be extremely small and turing complete, although it has no practical uses right now it can be easily adapted to any language you can think of