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A constructor is a function defined in a class with the name same as the class name and is used to automatically initialized the class data members. It is never preceded by a return type not even void.
eg -
class abc
{
int a, b;
abc() //constructor
{
a=0;
b=0;
}
};
main()
{
abc a;
}
The time we create object of the class in the main function the data members of the class are automatically initialised.
Constructor can even take parameter. Those constructor are known as parameterised constructor.
What else can I help you with?
Write abstract class in c plus plus?
An abstract class is any class definition that contains at least one pure-virtual function. class AbstractClass { public: virtual void DoSomething()=0; // Pure-virtual. };
In c plus plus Who tells the compiler that a specific class will be declared later in the program?
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
What is nested class in c plus plus?
s.
Can you use c in c plus plus without using class and object?
Sure.
What is an instance class in C plus plus?
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; }
Write abstract class in c plus plus?
An abstract class is any class definition that contains at least one pure-virtual function. class AbstractClass { public: virtual void DoSomething()=0; // Pure-virtual. };
Can a c plus plus class be derived from a Java class?
No.
In c plus plus Who tells the compiler that a specific class will be declared later in the program?
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
What is the role of object in c plus plus?
An object in C++ is an instance of a C++ class.
What is nested class in c plus plus?
s.
What is the unit of programming in c plus plus A. Function B. class C. object D. Attribute?
B. Class.
What is a method in c plus plus?
In C++, methods are simply class member functions.
Can you use c in c plus plus without using class and object?
Sure.
How do you create a class in C plus plus?
class class_name { private: data_members; public: member_functions; };
What is definition of employee code in c plus plus?
la la land
What is the difference between declaration and a definition in c plus plus?
A declaration is an incomplete type whereas a definition is a complete type.
What is object in c plus plus?
An object is simply an instance of a class.
