谁知道STL中mem_fun函数怎麽用啊?请指教!

[lwg7603]

如题!

[masterz]

The following code can be build with VC.net, but it is not compatible with VC6.0, maybe there is something wrong with VC6.0 STL.#include <iostream>
#include <algorithm>
#include <vector>
#include <functional>
using namespace std;
struct B {
virtual void print() = 0;
};

struct D1 : public B {
void print() { cout << "I'm a D1" << endl; return ; }
};

struct D2 : public B {
void print() { cout << "I'm a D2" << endl;return ; }
};

int main()
{
vector<B*> V;

V.push_back(new D1);
V.push_back(new D2);
V.push_back(new D2);
V.push_back(new D1);

for_each(V.begin(), V.end(), mem_fun(&B::print));
return 0;
}