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c++overloadingtypecast-operator
gueverra
gueverra

Reputation: 29

Overloading Typecasts C++ , How it works?

I was going through the below link to understand the topic. Over Loading Typecasts C++

class Cents
{
private:
    int m_nCents;
public:
    Cents(int nCents=0)
    {
        m_nCents = nCents;
    }

    // Overloaded int cast
    operator int() { return m_nCents; }

    int GetCents() { return m_nCents; }
    void SetCents(int nCents) { m_nCents = nCents; }
};

Now in our example, we call PrintInt() like this:

int main()
{
    Cents cCents(7);
    PrintInt(cCents); // print 7

    return 0;
}

I cannot understand How PrintInt(cCents) maps to to printing 7 and using the overloaded int operator.

Upvotes: 0

Views: 1108

Answers (1)

J3soon
J3soon

Reputation: 3143

Overloading int cast means when a Cents variable is casted to int, it'll return the m_nCents

// Overloaded int cast
operator int() { return m_nCents; }

Upvotes: 2

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