Question

Is the following code correct?

class A
{
public:
    int* m_a;
    A(int x) { m_a = new int(x);}
    ~A() {delete m_a;}
};

void f(A a)
{
    cout<

Cosmo · Accepted Answer

The destructor is called twice, the first time when the function f() is exited, the second time it is called when the main() function is exited, trying to delete the memory allocated for the m_a variable again.

Cosmo · Accepted Answer

No, the program will crash

Cosmo · Answer

Yes, the value 1 is displayed.

Cosmo · Answer

No, there will be a compilation error

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