Dear Ritik 

You need to clarify your question a little bit more. 

As you might know, there are two CA entry-level exams conducted by ICAI at present, one being old CA CPT exam and other being the new one called CA Foundation. The CA CPT exam for June session will be held on June 17, 2018, while CA Foundation exam for May session will be held across four days in May 2018.

If by saying 'I have not done CPC', you mean that you haven't registered or enrolled in CPT course, then I am sorry you will not be able to appear for CA CPT examination. As per the eligibility criteria, in order to appear for CPT exams for any session (may it be this coming June 2018 session exam or those in future), candidates were required to enroll in CPT course on or before June 30, 2017. 

Now, to apply for CA entry-level exams, you can register yourself for new examination, i.e. CA Foundation. The next exam of CA Foundation will take place in November 2018. To become eligible for that, you should get registered for CA Foundation course on or before June 30, 2018. 

I hope it clears the picture for you. Wish you the best!