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You are right it is a solution to my previous threads, I solved it and posted for someone who has same problem.

Regards,
awkward

Hope somebody is happy.

NR==1 {
num_columns=split( $0, menuend );
next;
}

{
split( $0, substrend );
for ( i=1; i<=NF; i++ ) {
minuend[i] -= substrend[i];
...

I am not a programmer or a student so it looks like I do not understand fully your reply
to my post.
Actually I meant that one file consists of multiple columns and subtraction must be done on each...

AWK subtraction in multiple columns

Hi there,

Can not get the following:

input: 34523 934
9485 3847
394 3847
3456 9384

awk 'NR==1 {for (i =...

I get the point of number subtraction in one column

awk 'NR==1 {n=$1; next}; {n-=$1} END {print n}' inputfile

but I cannot figure it out how to do this to multiple
columns.

awkward.