vector中存入一个类成员函数

#include"test.h"

class cls_test
{
vectorvecf;
public:
cls_test();
int f();

};
cls_test::cls_test()
{
vecf.push_back(f);
}
int cls_test::f()
{
return 20;
}

int main()
{

return 0;

}

#include
using namespace std;
class cls_test
{
typedef int(cls_test::*p)();
vector

vecf;
public:
cls_test();
int f();
};
cls_test::cls_test()
{
vecf.push_back(&cls_test::f);
}
int cls_test::f()
{
return 20;
}
int main()
{
return 0;
}

vector 《p》vecf; 过滤掉了