Search:

You forgot to define the main function.

You probably meant "declaration". Copy and paste the exact error messages.

Furthermore, you need to indent your code properly and remove unnecessary blank lines. Do not use the gets function: use...

What are the errors?

By the way, there is no need to keep harping on how urgent this is to you. If I help you now, it is because I want to help you right now. Whether it is urgent or not has no...