I was very sad because i forget to apply entrance. Now what should can i do.
As your query is that you wanted to apply for IIMC entrance exam but somehow you didn't appeared for the exam and you are confused with what next. I would like to tell you that that there is no other possible way or any other alternative. If you want to pursue your Mass and Communication studies at an higher level you have to appear for the exam. So in my opinion it will be better to prepare for this one whole year and apply next year for the same.
Further, if any detail that you need or think we can help you with that you can let me know in the comment section below.
I hope your query is solved.