Objects and classes is a feature of C++ which allow code reusability. A class is a blueprint of all the functions and variables some thing like a blueprint for a car. however like you cannot drive the blueprint of a car you drive the car. Similarly objects and derived from the class and are used in the code
eg
class rep {
private : int somevar;
public: showvar()
{
cout<<somevar;
}
};
int main()
{
rep C1;
c1.somevar()=27;
c1.showvar();
return 0;
}
In this code "rep" is the class and "c1" is the object and somvar is a variable defined for rep and used by c1;
An abstract class is any class definition that contains at least one pure-virtual function. class AbstractClass { public: virtual void DoSomething()=0; // Pure-virtual. };
A forward declaration. However forward declarations can only be used when the class is used as a pointer or reference prior to its definition, otherwise it must be defined before it is used. class A; // forward declaration class B { A& data; // reference to class that has yet to be defined }; class A {}; // definition
s.
Sure.
You have a class(i.g. MyClass): class MyClass{ public: int MyData; }; And then you use the class like this: int main(){ MyClass MyObject; MyObject.MyData=7; }
An abstract class is any class definition that contains at least one pure-virtual function. class AbstractClass { public: virtual void DoSomething()=0; // Pure-virtual. };
No.
A forward declaration. However forward declarations can only be used when the class is used as a pointer or reference prior to its definition, otherwise it must be defined before it is used. class A; // forward declaration class B { A& data; // reference to class that has yet to be defined }; class A {}; // definition
An object in C++ is an instance of a C++ class.
B. Class.
s.
In C++, methods are simply class member functions.
Sure.
class class_name { private: data_members; public: member_functions; };
la la land
A declaration is an incomplete type whereas a definition is a complete type.
Class Object Message