Zeno (programming language)

Zeno (after pre-Socratic Greek philosopher Zeno of Elea) is an imperative procedural programming language designed to be easy to learn and user friendly. Zeno is generic in the sense that it contains most of the essential elements used in other languages to develop real applications.

The Zeno Interpreter was designed for use in Windows 95 and later Microsoft operating systems. The interpreter comes with built-in debugging tools, a source code text editor, and an on-line language reference.

Zeno was created by Stephen R. Schmitt and is maintained by Abecedarical Systems.

Example: Sieve of Eratosthenes

 
const N : int := 5000
var a : array[N] of boolean
 
program
 
   var i, j : int 
 
   init_a                          % initialize array
 
   for i := 2...floor ( N/2 ) do
       for j := 2...floor ( N/i ) do
           a[i*j] := false         % mark as not prime
       end for
   end for
   j := 0
   for i := 2...N do               % output results
       if a[i] then                % is prime
           put i : 6 ...
           incr j
           if (j mod 5) = 0 then   % start new line
               put ""
           end if
       end if
   end for
 
end program
 
% initialize the array
procedure init_a
 
   var i : int
   for i := 1...N do
       a[i] := true
   end for
 
end procedure

Sample output

    2     3     5     7    11 
   13    17    19    23    29 
   31    37    41    43    47 
   53    59    61    67    71 
   73    79    83    89    97 
  101   103   107   109   113
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