i m doing my b.tech it.i m interested in doing some projects in this field.but i m unable to know what i can expose so please help me

First u decide on which platform u wanted to work and get urself certified and specialised as well. If ur C & C++ is very strong then u can go in Embedded System, Kernel Programming, System Programming, Device Driver Programming line. If u have good any of the programming language then u can choose

Let us know about your branch and domain in which you want to do your project, then we could help you. Revert back soon.