Arithmetic Operators

Awk takes its arithmetic operators from the C programming language. The following list describes what each one does.

Name Function of Arithmetic Operation
* Multiplies the expression preceding the operator by the expression following it.
/ Divides the expression preceding the operator by the expression following it.
% Takes the remainder after dividing the expression preceeding the operator by the expression following it.
+ Adds the expression preceeding the operator and the expression following it.
- Subtracts the expression preceeding the operator and the expression following it.
= Assigns the value of the expression following the operator to the variable preceeding it.
++ Increments the variable preceeding the operator.
-- Decrements the variable preceeding the operator.
+= Adds the expression following the operator to the variable preceeding it and assigns the result to the variable preceeding the operator.
-= Subtracts the expression following the operator to the variable preceeding it and assigns the result to the variable preceeding the operator.
*= Multiplies the variable preceeding the operator by the expression following it and assigns the result to the variable preceeding the operator.
/= Divides the variable preceeding the operator by the expression following it and assigns the result to the variable preceeding the operator.
%= Takes the remainder, after dividing the variable preceeding the operator by the expression following it, and assigns the result to the variable preceeding the operator.

*Name*	*Function of Arithmetic Operation*
*	Multiplies the expression preceding the operator by the expression following it.
/	Divides the expression preceding the operator by the expression following it.
%	Takes the remainder after dividing the expression preceeding the operator by the expression following it.
+	Adds the expression preceeding the operator and the expression following it.
-	Subtracts the expression preceeding the operator and the expression following it.
=	Assigns the value of the expression following the operator to the variable preceeding it.
++	Increments the variable preceeding the operator.
--	Decrements the variable preceeding the operator.
+=	Adds the expression following the operator to the variable preceeding it and assigns the result to the variable preceeding the operator.
-=	Subtracts the expression following the operator to the variable preceeding it and assigns the result to the variable preceeding the operator.
*=	Multiplies the variable preceeding the operator by the expression following it and assigns the result to the variable preceeding the operator.
/=	Divides the variable preceeding the operator by the expression following it and assigns the result to the variable preceeding the operator.
%=	Takes the remainder, after dividing the variable preceeding the operator by the expression following it, and assigns the result to the variable preceeding the operator.