Could someone send me some examples of B-spline curve and NURBS curve?
There are any number of examples on the web. Have you done a search?
Try Google with "B-spline" and dig in. (You've got about 6.5 million hits to work with.)
Ditto with NURBS curve.
Here's a couple of results:
You're evading the question.
That's not an example but theory.
I need examples and exercises.
Separate names with a comma.