Output of following C++ code will be?
C++
#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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