Off topic:How to use Perl to compare two Excel files cell by cell and print the differences

Question

[subramaniac41]

For Example:

File 1:

Column a: 1, 3, 5

Column b: 6, 7, 9

File 2:

Column a: 1, 3, 5

Column a: 6, 7, 8

Output: Mismatch in column b, 3rd row

Please help me out doing this, I am very new to perl