1. 为什么Delete会出错?

class C {public:         C () { cout <<"C " << endl; }         virtual ~C () { cout <<"~C " << endl;}}; classCDerived : public C {public:         CDerived() { cout <<"CDerived" << endl; }         ~CDerived() { cout <<"~CDerived" << endl; }}; int main(){         C   
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