What are the major changes from c+?o c++?

[Owain]

Hello, I would like to ask you a problem, I would like to know what are the major changes from c+?to c++? Thank you for informing me by explaining clearly.

[Kobe]

Function Prototypes

In C++, a function must have a prototype in scope when it is called. In C, this is not necessary, although it is regarded as good programming practice.