hey,

i hope you are doing well , no it is not mandatory to have computer science subjects in your 10+2 in order to pursue computer science engineering , if you are having those subjects then it is good for you and if you are not having that this wont create a problem , the basic eligibility criteria to get admission for the course computer science engineering is candidate must have passed their 10+2 from recognized board with science stream subjects having physics, chemistry and mathematics and candidate must have secured a minimum aggregate of 60 percent marks

all the best!