To provide tools for object oriented programming.
g++, gdb and make. A simple search for "Cygwin c++" will tell you all you need to know.
You cannot make a website with C++.
No.
Yes.
Negative.
To use C++ in Netbeans you will need a C++ compiler.
Yes, if you need a C to pass, and you have a C+, you pass.
For programming. C++ is better than C because it is object-oriented and has classes.
Yes.
No.
result = a * b * c;
Primarily to add object oriented programming methods to the C language.