函式前的???馕鲞\算子

akira32

函式前的???馕鲞\算子

::代表什?意思? 有加::??]加有何差?e?

        MSG msg;
        ::ZeroMemory(&msg,sizeof(MSG));

shenguhan

void Fun1()
{
cout<<"::Fun1"<<endl;
}

class CFun
{
public:
void Fun1()
{
cout<<"CFun::Fun1"<<endl;
}
viud Print()
{
Fun1();
::Fun1();
}
};

Output:
CFun::Fun1
::Fun1