This Site is intended to provide helps to Var'aq language programmers around the world through technical examples, informational articles, and personal assistance.

The following examples are meant to be a quick Getting Started sort of tutorial using the varaq-kling.pl version in Perl.

Example 2. Arithmetic
Since Var'aq is a stack-based programming language like FORTH, arithmetic is performed using Reverse Polish Notation (RPN) which uses post-fix operators. Using post-fix notation means that the arithmetic operator appears *after* the numbers on which it operates.

Basic (infix notation):
PRINT 2 + 2
Lisp (prefix notation):
(print (+ 2 2 ) )
FORTH (post-fix notation):
2 2 + .
Var'aq (post-fix notation):
2 2 boq cha'

Because of the nature of post-fix notation, normal arithmetic order of precedence is not handled by the programming language--the programmer must ensure the order of precedence himself.

Basic (automatic order of precedence):
PRINT 2 + 5 * 2
Multiplication will happens first (5 * 2)=10, then 2 + (10).
Lisp (prefix notation):
(print (+ (* 5 2) 2 ) )
Multiplication will happens first (5 * 2)=10, then 2 + (10).
FORTH (programmer-controlled order of precedence):
2 5 2 * + .
The last 2 is multiplied times the 5 giving 10, then the 10 and first 2 are added together.
Var'aq (programmer-controlled order of precedence):
2 5 2 boq'egh boq cha'
Same as FORTH example above.

See the Var'aq specification for the arithmetic operators supported by Var'aq.

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