Can a destructor return a value C++?
Do not return a value (or void ). Cannot be declared as const , volatile , or static . However, they can be invoked for the destruction of objects declared as const , volatile , or static .
What value should return a destructor?
Destructors do not return a value.
What is return type of destructor?
A destructor is a special member function that takes no arguments and has no return type: this is told in pretty much all the c++ books.
What is the output of destructor?
While returning from a function, destructor is the last method to be executed. The destructor for the object “ob” is called after the value of i is copied to the return value of the function. So, before destructor could change the value of i to 10, the current value of i gets copied & hence the output is i = 3.
Can destructor have parameters?
A special declarator syntax using an optional function-speciﬁer (7.1. 2) followed by ˜ followed by the destructor’s class name followed by an empty parameter list is used to declare the destructor in a class deﬁnition. So no, destructors do not take parameters.
Is destructor called automatically in C++?
Destructor function is automatically invoked when the objects are destroyed.
What is the return type of constructor in C++?
Constructors don’t have return type. A constructor is automatically called when an object is created. It must be placed in public section of class. If we do not specify a constructor, C++ compiler generates a default constructor for object (expects no parameters and has an empty body).
What is the return type of constructors?
A constructor doesn’t have any return type. The data type of the value retuned by a method may vary, return type of a method indicates this value. A constructor doesn’t return any values explicitly, it returns the instance of the class to which it belongs.
How do destructors work in C++?
Destructors are usually used to deallocate memory and do other cleanup for a class object and its class members when the object is destroyed. A destructor is called for a class object when that object passes out of scope or is explicitly deleted.
Can we pass arguments to destructor in C++?
The destructor does not have arguments. It has no return type not even void. An object of a class with a Destructor cannot become a member of the union. A destructor should be declared in the public section of the class.
Can we have parameterized destructor in C++?
So no, destructors do not take parameters.