Hello,
Since you have got the 45 percentage as your total score in class 12 then taking admission in BCA it's somebody you know difficult process because the thing is like that at least 60% is really necessary so all the best for your future just go and search out for the options that can tackle 45%.
Thankyou

Well this is a very poor score in 12th standard you wouldn't be able to get into any course with these aggregate, and even if you manage to get admission you have to compromise with your choice of college else you can take admission under management quota.