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Top Forums Shell Programming and Scripting Local variable in functions (gawk) Post 302929912 by Scrutinizer on Sunday 28th of December 2014 11:26:54 PM
Old 12-29-2014
If you just specify a variable inside an awk function, it becomes a global variable.

In awk you can make the variable "k" local to the function by putting it in the function header. The convention (for readability of your code) is to use a TAB character or extra spaces between the parameters and the local variables. You then call the function using only the parameter before the TAB, like so:
Code:
function quita_ceros(cad,      k)

You then call the function like this:
Code:
quita_ceros(var1)

then the cad variable is local, call by value and the k variable is not called and is just local to the function..
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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