关于C++的const对象

#include <iostream>
using namespace std;

class CTest
{
private:
    int m_iX;
    int m_iY;
public:
    CTest(int x = 0, int y = 0)
    {
        m_iX = x;
        m_iY= y;
    }
    ~CTest()
    {
        m_iY = 9;
    }
    void SetX(int x)
    {
        m_iX = x;
    }
    void SetY(int y)
    {
        m_iY = y;
    }
    void print() const    //只有const成员函数可以访问const对象的const数据成员.
    {
        cout<<"m_iX = "<<m_iX<<endl;
        cout <<"m_iY = "<<m_iY<<endl<<endl;
    }
};

int main()
{
    CTest t1(11, 22);
    cout<<"t1打印: "<<endl;
    t1.print();

    t1.SetX(33);
    t1.SetY(44);
    cout<<"t1修好值后打印:"<<endl;
    t1.print();

    const CTest t2(55, 66);    //const对象的任何成员都不能被修改
    const CTest *p = new CTest(3, 4);

    cout<<"打印t2:"<<endl;
    t2.print();

//    t2.SetX(77);        //const对象不能调用非const函数.
//    t2.SetY(88);
    cout<<"打印指针对象:"<<endl;
    p->print();

    t2.~CTest();
    cout<<"t2调用析构函数后:"<<endl;
    t2.print();


    return 0;
}