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Full Discussion: awk printf problem
Top Forums UNIX for Advanced & Expert Users awk printf problem Post 43245 by krishna on Thursday 13th of November 2003 09:04:54 PM
Old 11-13-2003
awk printf problem

Hi Friends,

Can anyone guide me how to compute sum of column4 from the below file x using awk command? when i do using awk I'm getting sum 7482350198352648.000000 which is not accurate.

$ cat x
56,232,dfgjkhdfj,,56,anand
56,22,dfgjkhdfj,7482347823453123.97834 ,56,Khan
56,23,dfgjkhdfj, ,56,krishna
56,232,dfgjkhdfj,45.68 ,56,Hari
56,232,dfgjkhdfj,2374899477.99235 ,56,Gopa
56,232,dfgjkhdfj, ,56,Gopa

$ echo 7482347823453123.97834+45.68+2374899477.99235|bc -l
7482350198352647.65069 ===> accurate result

$ awk -F, '{a+=$4} END {printf("%20.6f\n",a)}' x
7482350198352648.000000 ===> why I'm not getting correct result?

Thanks in advance
Krishna
 

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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). Free Software Foundation Nov 3 1999 IGAWK(1)
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