(gawk.info.gz) Expressions

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 6 Expressions
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 Expressions are the basic building blocks of `awk' patterns and
 actions.  An expression evaluates to a value that you can print, test,
 or pass to a function.  Additionally, an expression can assign a new
 value to a variable or a field by using an assignment operator.
 
    An expression can serve as a pattern or action statement on its own.
 Most other kinds of statements contain one or more expressions that
 specify the data on which to operate.  As in other languages,
 expressions in `awk' include variables, array references, constants,
 and function calls, as well as combinations of these with various
 operators.
 

Menu

 
* Values                      Constants, Variables, and Regular Expressions.
* All Operators               `gawk''s operators.
* Truth Values and Conditions Testing for true and false.
* Function Calls              A function call is an expression.
* Precedence                  How various operators nest.
* Locales                     How the locale affects things.
 
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