gawk - awk to match two files and output the difference with column name & value -

i want compare 2 files awk , output unmatched columns.

what have tried till

awk -f',' 'fnr==nr{         for(i=0;i<=nf; i++){         a[i];          }next;         }         (i=1;i<=nf;i++){         if($i in a){         {printf("match: %s , col-> %d" $i,i-1)}         else          {printf("un- match: %s , col-> %d" $i,i-1)         }          }         }' 

but 1 of no use.

here need.

example: file 1 1,2,3,4,5,6   file 2 1,2,5,4,5,7  output  col 3 -> 3,5 col 6 -> 6,7 

awk, work more rows well

awk -f, 'nr==fnr{for(i=1;i<=nf;i++)a[nr,i]=$i;next} {for(i=1;i<=nf;i++)if(a[fnr,i]!=$i)print "row:"fnr,"col:"i"->",a[fnr,i]","$i}' file{1,2} 

---

example

input

file1

1,2,3,4,5,6 6,5,4,3,2,1 

file2

1,2,5,4,5,7 6,4,4,3,1,1 

output

row:1 col:3-> 3,5 row:1 col:6-> 6,7 row:2 col:2-> 5,4 row:2 col:5-> 2,1