C++ | Constructors | Question 7
What is the output of following program?
#include <iostream>using namespace std; class Point{ int x, y;public: Point(const Point &p) { x = p.x; y = p.y; } int getX() { return x; } int getY() { return y; }}; int main(){ Point p1; Point p2 = p1; cout << "x = " << p2.getX() << " y = " << p2.getY(); return 0;} |
(A) x = garbage value y = garbage value
(B) x = 0 y = 0
(C) Compiler Error
Answer: (C)
Explanation: There is compiler error in line “Point p1;”. The class Point doesn’t have a constructor without any parameter. If we write any constructor, then compiler doesn’t create the default constructor.
It is not true other way, i.e., if we write a default or parameterized constructor, then compiler creates a copy constructor. See the next question.
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