Question: which is the most difficult programming language in the world?
Answer: Malbolge. Malbolge is one of the toughest programming languages. ... 
Cow Programming Language. A cow programming language is released sometime in early 2013. ... 
Brainfuck. Brainfuck is an esoteric programming language introduced in 1993 by Urban Muller. ... 
INTERCAL. ... 
Whitespace.