C++ | Constructors | Question 6
#include<iostream>using namespace std; class X {public: int x;}; int main(){ X a = {10}; X b = a; cout << a.x << " " << b.x; return 0;} |
(A) Compiler Error
(B) 10 followed by Garbage Value
(C) 10 10
(D) 10 0
Answer: (C)
Explanation: The following may look like an error, but it works fine.
X a = {10};
Like structures, class objects can be initialized.
The line “X b = a;” calls copy constructor and is same as “X b(a);”. Please note that, if we don’t write our own copy constructor, then compiler creates a default copy constructor which assigns data members one object to other object.
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