考考你的C++, 猜猜输出啥结果？(1)

 

#include <iostream>#include <complex>using namespace std;class Base{public:virtual void f(int i){cout << "Base::f(int i)" << endl;}virtual void f(double i){cout << "Base::f(double i)" << endl;}virtual void g(int i=10){cout << "Base::f(int i=10) " << i << endl;}};class Derived:public Base{public:void f(complex<double> f){cout << "Derived::f(complex<double>)" << endl;}void g(int i=20){cout << "Derived::f(int i=20) " << i<< endl;}};int main(int argc, _TCHAR* argv[]){Base b;Derived d1, d2;Base *pb = &d2;b.f(1.2);d1.f(1.2);pb->f(1.2);b.g();d1.g();pb->g();return 0;} 

 

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Base::f(double i)

Derived::f(complex<double>)

Base::f(double i)

Base::f(int i=10) 10

Derived::f(int i=20) 20

Derived::f(int i=20) 10