I'm a junior in college and I can say that honestly, there is no need to know what you're going to major in that early. I know people who switch their majors as late as the end of junior year. I suggest using your first year to take some classes that sound interesting to you (whether they be in computer science or something else). Get a feel for what you enjoy. I went into college very enthusiastic for biology and after taking the general bio series, decided that it wasn't for me. You never know.

Just a tip - I found talking to upper classmen who are taking classes in the major/minor that you are interested in way more helpful and informative than talking to the advisors at the university. If you have friends or know people who have taken coursework that you are considering, I highly suggest asking them about it - what they liked, what they didn't like, if a specific professor is better than others, etc.

Oh and also - clubs are not always super reflective of what the major/coursework will be like. Joining the CS club sounds like it might be a good extracurricular but I wouldn't use it to base your decision to major/minor off of.