Shell Programming and Scripting

I have about 5000 columns of data that i need to convert all of it into pecentages. for shorter colums i have been using this code:
{print $1/($1+$2)*100,$2/($1+$2),$3/($3+$4)*100 .....}
but this is a teadious process... is there anyway to do it without having to write all of them out?

sample data:
55 65 48 45 48 68 32 68 44 34 88 65
82 63 52 54 51 68 75 0 0 20 10 77
55 77 60 55 22 60 40 25 75 55 45 90
20 80 33 63 0 64 32 22 75 0 43 56
54 54 12 35 48 87 65 12 77 85 0 15

Output data:
45.83 54.16 51.61 48.38 .................... (all the columns are in pairs..$1 and $2 are a pair.. so while calculating column 3 and 4.. it would be $3/$3+4 and $4/$3+$4 .....$5/$5+$6, $6/($5,$6)

PS: there will be lines that will have to be divided by zero. in those cases i am using this code.. is it right? need to embedd it into the overall code as well..
if ($0 != 0) lines++; print 0

Thank you.

Does it matter to keep the stuff on the originating line?
I am imagining a solution would would create a long list...

ya i can go on putting the code till those endless colums.. but that would take long and prone to errors..well... doesnt matter where it is.. as long as it works

Command instructions
I break up pairs of numbers, and put a ~ marker
get rid of new-line (carriage returns)
replace the ~ after each pair with a new-line; putting pairs on own rows
then do the awk command

Code:

> cat file30 | sed "s/[0-9]*.[0-9]*/&~/g" | tr "\n" " " | tr "~" "\n" | awk '$1*$2>0,z=$1+$2;x=$1/z;y=$2/z {print x,y}'

First couple enty outputs
it is repeating my inputs twice, & not sure why yet (still thinking about that)
then appears to be doing your % as requested

Code:

55 65
55 65
0.458333 0.541667
 48 45
 48 45
0.516129 0.483871

Perhaps this can get you started?
The awk needs to be 'finished'.

Also, the awk might be able to be augmented to use ~ as the RS (record separator). I just had issues trying to get that to work quickly.

hmm.. wat if the output should come out as per the input.. like corresponding to the output.?

anyone??

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