problem while adding column values in awk

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# 1  
Old 07-27-2009
problem while adding column values in awk


I have a file "input.txt" with the following content :


The 7th field contains both +ve and -ve values. I want to get the resultant sum all the values in the 7th field. I used the following awk command :

awk -F"," '{print $7}' input.txt | awk '{sum+=$1} END {print sum}'

I am getting this result : 5.29935e+06

How can i convert the result to a proper decimal value because i need the resultant value to be passed into another script as input.

---------- Post updated at 11:07 AM ---------- Previous update was at 11:05 AM ----------

Forgot to mention that the file "input.txt" contains about 40000 rows and the 7th field might have small values like 0.02 or 0.001 etc.
# 2  
Old 07-27-2009

Multiply the result by 1.

END {print sum*1}

Or use printf: i.e.
END {printf( "%f\n", sum)}


Last edited by Scott; 07-27-2009 at 08:17 AM..
# 3  
Old 07-27-2009
One awk command is sufficient:

awk -F, '{s+=$7}END{print s}' file

# 4  
Old 07-27-2009

Thanks Scottn and Franklin,

That printf command worked and now i am getting the proper value :

# awk -F, '{s+=$7}END{printf( "%f\n", s)}' input.txt


Thanks for the help guys !
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