#include"iostream"

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using namespace std;

class base1{

public:

base1(){

cout << "父類構(gòu)造函數(shù)" << endl;

}

~base1(){

cout << "父類的析構(gòu)函數(shù)" << endl;

}

virtual void print(){

cout << "virtual base1.print();" << endl;

}

};

class derived1 :public base1{

int b;

public:

derived1(){

cout << "子類構(gòu)造函數(shù)" << endl;

}

~derived1(){

cout << "子類的析構(gòu)函數(shù)" << endl;

}

virtual void print(int a = 0){

cout << "virtual derived.print();" << endl;

}

};

void f(){

base1 *d=new derived1;

delete d;

}

int main(){

f();

system("pause");

return 0;

}