Apply a calculation on columns (awk) - awk

Question

I tried to make this calculation from the column 41 to the end of the line:
awk '{ { split($10,a,":") } { split( a[4], b ,",") } {print b[1]+b[2]}}' filename
I know how to do this on just one column, but when I tried to do a loop it fails :
awk '{for (i=10;i<=NF;i++) {split($i,a,":")} {split(a[4],b,",")} {print ( b[1]+b[2])}}' filename
The aim is to split each columns and to do the sum of those numbers :
./.:0:.,.,.:0,0:0,0
Here is what my file looks like :
Contig POS ID REF ALT QUAL FILTER INFO FORMAT S155 S158 S168 S173 S175 S178 S180 S188 S189 S191 S193 S194 S196 S201 S205 S206 S208 S209 S210
NODE_14985_length_2800_cov_1.38384 67 999978 A C . PASS Ty=SNP;Rk=1;UL=19;UR=31;CL=.;CR=.;Genome=A;Sd=1 GT:DP:PL:AD:HQ ./.:8:.,.,.:8,0:71,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0 ./.:0:.,.,.:0,0:0,0
Here is my actual output:
awk '{for (i=10;i<=NF;i++) {split($i,a,":")} {split(a[4],b,",")} {print b[1]+b[2]}}' file.vcf | head
0
0
0
0
0
I want a matrix of the calcul for each columns :
0 0 0 0
1 2 0 6
2 0 0 8
...
Thank you in advance for your help

Answer 1

changed the printf adding a print at the end (your printf need, at least, a space to separate results of the line)
based on your sample change the 41 to a number lower than 28 (there is only 28 field for awk in this dataset)
your different split are AFTER the loop, they must be IN the loop scope (see where are the brace)
Modified code:
awk 'NR > 1 {
for( i=41; i<=NF; i++) {
split( $i, a, ":" )
#print NF ":" i "[" $i "] a[4]:" a[4]
split( a[4], b, ",")
#print i ": " b[1] " + " b[2] " : " b[1] + b[2]
printf( "%d ", b[1] + b[2])
}
print ""
}' YourFile