Chinni,
It sounds like you aren't trying to write code then; just a logical test case. A test case is a list of steps for how to reproduce a scenario of using the application. The idea is to be as detailed as possible so someone can follow those instructions later. For example, provide all inputs and steps that you need to follow.
If your organization has a template, you can use that. If not, you can just use a list in
Word or Excel.