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Top Forums Shell Programming and Scripting Help needed with multiplying two values of two columns in a file Post 302678311 by neutronscott on Friday 27th of July 2012 02:47:17 PM
Old 07-27-2012
added or multiplied? you mean you can have any number of columns rather than just two?

Code:
awk '{p=$1;for(i=2;i<=NF;i++)p*=$i;printf("%.3f\n",p)}'

example:
Code:
$ echo 3 .5 2 | awk '{p=$1;for(i=2;i<=NF;i++)p*=$i;printf("%.3f\n",p)}'
3.000

This User Gave Thanks to neutronscott For This Post:
 

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DB2_FIELD_NAME(3)							 1							 DB2_FIELD_NAME(3)

db2_field_name - Returns the name of the column in the result set

SYNOPSIS
string db2_field_name (resource $stmt, mixed $column) DESCRIPTION
Returns the name of the specified column in the result set. PARAMETERS
o $stmt - Specifies a statement resource containing a result set. o $column - Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the column, or a string containing the name of the column. RETURN VALUES
Returns a string containing the name of the specified column. If the specified column does not exist in the result set, db2_field_name(3) returns FALSE. SEE ALSO
db2_field_display_size(3), db2_field_num(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3), db2_field_width(3). PHP Documentation Group DB2_FIELD_NAME(3)
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