Some errors appeared during apply a practical example to Builder design pattern

I have written a code which applies the "Builder" design pattern but some errors appeared:

The code:

class Builder {
public:
    int m_suger;
    int m_cup;
    string m_flavour;

    Builder* sugar(int sugar) {
        this->m_suger = sugar;
        return this;
    }
    Builder* cup(int cup) {
        this->m_cup = cup;
        return this;
    }
    Builder* flavour(string flavour) {
        this->m_flavour = flavour;
        return this;
    }
    Tea* build() {
        return new Tea(this);
    }
};

class Tea {
public:
    int m_suger;
    int m_cup;
    string m_flavour;

    Tea(Builder* b) {
        m_suger = b->m_suger;
        m_cup = b->m_cup;
        m_flavour = b->m_flavour;
        cout << "Hot " << b->m_cup << " cup of tea is comming!, with " << b->m_flavour << endl;
    }
};

int main(int argc, char *argv[]) {
    Tea* mintTea = new Builder()->cup(2)->sugar(3)->flavour("mint")->build();
    return 0;
}