constructor.cc

来自「做为SD0609的一员,我扎实的基础是如何打出来的,来看看我那时连猴子选大王都不」· CC 代码 · 共 43 行

#include <iostream>
using namespace std;

class A{
	int data;
public:
	A():data(0){cout<<"A()"<<endl;}
	A(int d):data(d){cout<<"A(int)"<<endl;}
	~A(){cout<<"~A()"<<endl;}
	void disp(){cout<<"A::data="<<data<<endl;}
};
class B : public A{
	int data;
public:
	B():data(0){cout<<"B()"<<endl;}
	B(int d):data(d){cout<<"B(int)"<<endl;}
	~B(){cout<<"~B()"<<endl;}
	void disp(){cout<<"B::data="<<data<<endl;}
};
void func1()
{
	B ob;
	ob.A::disp();
	ob.disp();
}
void func2()
{
	B obj(100);
	obj.A::disp();
	obj.disp();
}
int main(int argc, char* argv[])
{
	cout << "===call func1===" << endl;
	func1();
	cout << "===return from func1===" << endl;
	cout << "===call func2===" << endl;
	func2();
	cout << "===return from func2===" << endl;
	return 0;
}