C++ | const keyword | Question 3

Predict the output of following program.

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#include <iostream>
using namespace std;
class Point
{
    int x, y;
public:
 Point(int i = 0, int j =0)
   { x = i; y = j;  }
   int getX() const { return x; }
   int getY() {return y;}
};
  
int main()
{
    const Point t;
    cout << t.getX() << " ";
    cout << t.getY();
    return 0;
}

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(A) Garbage Values
(B) 0 0
(C) Compiler Error in line cout << t.getX() << " ";
(D) Compiler Error in line cout << t.getY();


Answer: (D)

Explanation: There is compiler Error in line cout << t.getY();

A const object can only call const functions.

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Improved By : Kjell

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