Hi ishaan,

              It is good to hear that you are deciding about your future in advance. You can do commerce with computers as an additional subject and learn coding as well if you have interest.

If you want to go to banking sector or finance or accounts sector you can do Commerce in 12th and then BCom. Hons. from best university or college. After Commerce you can go get jobs in:

• Finance 
• Banking
• Chartered Accountant
• Company Secretary
• Insurance
• Foreign trade
• Investment banker
• Stock broker

If you want to do Computer Science and work in top companies such as Google, Microsoft, Dell, HP etc. You should first do Non Medical with PCM. You should crack JEE mains and Advanced with very good rank to get admission in NIT's or IIT's. Your  All India rank should be less than 2000 to get admission in Computer Science.

All the best