Convert a numeric to 2 decimal point value


 
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# 1  
Old 11-08-2018
Convert a numeric to 2 decimal point value

Hi , I have a file which contains text like

Code:
A|Mau|Code|12|Detail
B|Mau|Code|20|Header

I want to write a command using awk which will output

Code:
A|Mau|Code|12.00|Detail
B|Mau|Code|20.00|Header

I used a command like
Code:
awk -F"|" {printf "%s|%s|%s|%.2f|%s",$1,$2,$3,$4,$5}'

which does the job but could have been better.

any suggestions?

Last edited by Scrutinizer; 11-08-2018 at 04:49 PM.. Reason: code tags
# 2  
Old 11-08-2018
Perhaps
Code:
awk -F"|" -v OFS="|" '{ $4=sprintf("%.2f",$4); } 1'

This User Gave Thanks to Corona688 For This Post:
# 3  
Old 11-08-2018
Your approach needs two small corrections to print the desired output:
Code:
awk -F"|" '{printf "%s|%s|%s|%.2f|%s\n",$1,$2,$3,$4,$5}' file

A wee bit shorter would be
Code:
$ awk -F\| '$4+=1e-4' CONVFMT="%.2f" OFS="|" file
A|Mau|Code|12.00|Detail
B|Mau|Code|20.00|Header

(will fail on $4 == 0.0001, though)
# 4  
Old 11-10-2018
Can you please explain what does "1" at the end does? I can see that i dont need to write print $0 to print the complete line
# 5  
Old 11-10-2018
awk works on pattern {action} pairs in a way that it evaluates the pattern, and, if TRUE, executes the action.

man awk:
Quote:
One, but not both, of pattern {action} can be omitted. If {action} is omitted it is implicitly { print }. If pattern is omitted, then it is implicitly matched.

So - as 1 represents TRUE, awk executes the default action print.
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