_________ is used to declare and initialize an object from another object of same class in C++.
- Copy constructor
- Default constructor
- Overloaded constructor
- Non-parametrized constructor
Answer (Detailed Solution Below)
Option 1 : Copy constructor
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A constructor is a member function of a class that initializes objects of a class. In C++, Constructor is automatically called when an object (instance of a class) creates. It is a special member function of the class.
Syntax
class_name(parameter1, parameter2, ...)
{
// constructor Definition
}
Default Constructor
It is the constructor that doesn’t take any argument. It has no parameters.
Parameterized Constructors
It is possible to pass arguments to constructors. Typically, these arguments help initialize an object when it is created.
Copy Constructor
A copy constructor is a member function that initializes an object using another object of the same class.
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a ____ is a member function that is automatically called when a class object is __. MCQs Answer: c. constructor created
#include<iostream> usingnamespacestd; classMCQs { public: MCQs(){ cout<<"welcome to T4Tutorials.com"<<endl; }
}; intmain(){ MCQsx,y,z; }
a. destructor created
b. static function, deallocated
c. constructor, created
d. utility function declared
e. None of theseC++ Program to show that constructor is a member function that is automatically called when a class
object is created
Output
Welcome to T4Tutorials.com
Welcome to T4Tutorials.com
Welcome to T4Tutorials.com
In this example we have three objects X, Y, X. so let’s see what happens.
object X
When object x is created, then MCQs() function is called and it will print “Welcome to T4Tutorials.com”.
object Y
When object Y is created, then MCQs() function is called and it will print “Welcome to T4Tutorials.com”.
object Z
When object Z is created, then MCQs() function is called and it will print “Welcome to T4Tutorials.com”.
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