Your knowledge is not going to help you create a website: you don't use either C or C++.
You need HTML / Javascript at the client side, and probably either VB / C# or PHP at the server side.
You can start creating a website with just client side code:
W3Schools Online Web Tutorials[
^] will get you started, but for more flexibility (and anything remotely resembling security) you will need server side code as well:
ASP.NET Overview[
^] is a place to start.
Or ... there are "website builders" available:
w3schools tutorial - Google Search[
^] but frankly, they don't produce anything you'd really want to use in the real world, beyond a basic site.