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2.Int *p;
P[1]=1;
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Class Dervier
{
Virtual void printf1(){printf(¡°dervier1¡±);
Void printf2(){printf(¡°deriver2¡±);
};
Class Sub:Dervier
{
Virtual void printf1(){printf(¡°sub1¡±);
Void printf2(){printf(¡°sub2¡±);
};
Void main()
{
Dervier *d;
Sub s;
d=&s;
d->printf1();
d->printf2();
}
sub1deriver2
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