Variations "Hello, World!" program

a hello, world! program running on sony s playstation portable proof of concept.

there many variations on punctuation , casing of phrase. variations include presence or absence of comma , exclamation mark, , capitalization of h , both h , w , or neither. languages forced implement different forms, such hello world , on systems support capital letters, while many hello, world programs in esoteric languages print out modified string. example, first non-trivial malbolge program printed hello world , having been determined enough.

there variations in spirit, well. functional programming languages, lisp, ml , haskell, tend substitute factorial program hello, world, functional programming emphasizes recursive techniques, whereas original examples emphasize i/o, violates spirit of pure functional programming producing side effects. languages otherwise capable of hello, world (assembly, c, vhdl) may used in embedded systems, text output either difficult (requiring additional components or communication computer) or nonexistent. devices such microcontrollers, field-programmable gate arrays, , cpld s, hello, world may substituted blinking led, demonstrates timing , interaction between components.

the debian , ubuntu linux distributions provide hello, world program through apt packaging system; allows users type apt-get install hello program installed, along software dependencies. while of useless, serves sanity check , simple example newcomers of how install package. more useful developers, however, provides example of how create .deb package, either traditionally or using debhelper, , version of hello used, gnu hello, serves example of how write gnu program.