这两种为什么会不一样？

using namespace std;

class Student
{
    string name;
    static int total;//用来统计学生总人数
public:

    Student(string p="wang")
    {
       name=p;
       total++;
    };


    static int GetTotal()
    {
        return total;
    };
    ~Student(){total--;}
};
int Student::total=0;
int main()
{
    cout<<"The number of all students: "<<0<<endl;
    Student a;
    cout<<"The number of all students: "<<a.GetTotal<<endl;
    Student b("zhao");
    cout<<"The number of all students: "<<b.GetTotal<<endl;
    return 0;
}
using namespace std;

class Student
{
    string name;
    static int total;//用来统计学生总人数
public:

    Student(string p="wang")
    {
       name=p;
       total++;
    };


    static int GetTotal()
    {
        return total;
    };
    ~Student(){total--;}
};
int Student::total=0;
int main()
{
    cout<<"The number of all students: "<<0<<endl;
    Student a;
    cout<<"The number of all students: "<<a.GetTotal()<<endl;
    Student b("zhao");
    cout<<"The number of all students: "<<b.GetTotal()<<endl;
    return 0;
}

cout<<a.GetTotal应该是返回了类里面GetTotal函数的地址吧，所以27，29行输出的是一样的

这不是一样的吗？