C vs C++

There are actually quite a few areas where c and c++ different (in addition to the classes, template, exceptions, etc).

As far as major differences, here's a list which covers it well:

• anonymous unions
• classes
• constructors and destructors
• exceptions and try/catch blocks
• external function linkages 
• function overloading
• member functions
• namespaces
• new and delete operators and functions
• operator overloading
• reference types
• template classes
• template functions
• powerfull stl  library

                                                   C and C++ difference video:-