Create a C++ class String with constructors that initialize
the object. Accept a paragraph of text using member
functions and find out the following things in it
1) No of unique words.
2) No of repitations if not an unique word
3) Total count of words excluding repearted words in the
whole paragraph.
4) No of words not having any special symbols.
E.g
Input:"Hello! welcome to VIT. you are all invited to lab for
doing your c++ course. this course will expose your
programming skills"
1) 18
2)to-2,course-2,
3)16
4) 16