Of course they are used. Both stand-alone and class-member functions are used in C++.
The only difference is that C does not use nor require prototypes. C++ does because all functions and types must at least be declared, if not defined, before they can be used.
Turn on the intellisense feature.
In C there are functions only, In Java methodsonly (static methods as well), in C++ both.
Front functions such as vector::front(), list::front() and queue::front() return the first object in a container class. Not to be confused with begin() functions such as vector::begin() which return an iterator object which is typically used in iterative functions (loops) to traverse the objects within a container.
The header, io.h, is part of the standard C library and contains declarations for file handling and I/O functions. The file has no practical purpose in C++; it is only included because it was required prior to C++ standardisation. However, it can be used when writing C-style programs and libraries in C++.
One.
Yes, there can be friend functions in C++.
No, they are functions. Operators are -> or ++or /=
In C++, methods are simply class member functions.
The only difference is that C does not use nor require prototypes. C++ does because all functions and types must at least be declared, if not defined, before they can be used.
Turn on the intellisense feature.
It should work without any special action.
C++ built-in functions are those functions that are provided for you as part of the language itself, and includes all of the C standard library functions (all of which were inherited from C) and is expanded upon by the C++ standard template library. C++ implementors may provide additional functions that are platform-specific, however these are not considered built-in functions becuase C++ is a cross-platform language. These are best described as 3rd party functions. The functions you yourself write are known as user-defined functions.
Constant data and constant functions.
A singleton.
The C++ standard library contains all the pre-defined functions.
Put their names into the parameter-list.