Create an income tax calculator based on the following criteria.
Income tax slabs 2012-2013 for General tax payers
Income tax slabs 2012-2013 for Senior citizens (Aged 60years but less than 80 years)
Income tax slab (in Rs.) Tax 0 to 2,00,000 No tax 2,00,001 to 5,00,000 10% 5,00,001 to 10,00,000 20% Above 10,00,000 30%
Income tax slabs 2012-2013 for very senior citizens (Aged80 and above)
Income tax slab (in Rs.) Tax 0 to 2,50,000 No tax 2,50,001 to 5,00,000 10% 5,00,001 to 10,00,000 20% Above 10,00,000 30%
Income tax slab (in Rs.) Tax 0 to 5,00,000 No tax 5,00,001 to 10,00,000 20%