Forth is an actively used programming language created in 1970.

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Example code from the Hello World Collection:

' Hello world in Forth

." Hello World" CR

Example code from Linguist:

: HELLO  ( -- )
    ." Hello Forth (fth)!" ; 

HELLO

Example code from Wikipedia:

hex
create AKey   61 c, 8A c, 63 c, D2 c, FB c,
: test   cr   0 DO  rc4_byte . LOOP  cr ;
AKey 5 rc4_init
2C F9 4C EE DC  5 test   \ output should be: F1 38 29 C9 DE
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Last updated February 11th, 2019