No, it is not a problem. If you go to any college, this will definately not prevent you from taking admission. Later, you may have to work a little harder and take some extra classes. There are many online courses available which you can take up for it. Prior knowlege of computer sciences is not compulsory as long as you have the required score in mains. You can take admission and begin working on your skills.

Hello Shaan! 

You will not face any problem. In every college they teach C++ or C from the basics because in competitive exams they are judging you on the basis of Physics, maths and chemistry, not CS. Hence, don't worry, they will teach you from the basics.

No problem

Many students don't know about c++ 

The respective college teaches you everything from basics .

Even though there are many online tutorial you can refer those videos .

Programming is taught from scratch 

Anyway you will be learning basic sciences during your first year . there will be more coding from second year onwards

Don't worry about future.