#include <iostream>

using namespace std;

class Test {

public:

    int x;

    int y;

    void const_m1() const;

    void const_m2() const;

    void m3();

    void m4();

};

/**

 * //1常成员函数不能修改成员变量的值

 * //2常成员函数只能调用常成员函数，不能调用普通成员函数

 * //3普通成员函数可以调用常成员函数

 */

void Test::const_m1(void)const {

    cout<<"start of const_m1() ,call:"<<endl;

    this->const_m2();//可以调用const_m2()

    //this->m3();//error C2662: “Test::m3”: 不能将“this”指针从“const Test”转换为“Test &”

    //this->m4();//error C2662: “Test::m4”: 不能将“this”指针从“const Test”转换为“Test &”

    //this->x = 3;//error C3490: 由于正在通过常量对象访问“x”，因此无法对其进行修改

    cout<<"end of const_m1()"<<endl;

}

void Test::const_m2(void)const {

    cout<<"this is const_m2()"<<endl;

}

void Test::m3(void) {

    cout<<"this is m3(),call:"<<endl;

    this->const_m2();

    cout<<"end of m3()"<<endl;

}

void Test::m4(void) {

    cout<<"this is m4()"<<endl;

    this->x = ;

}

int main(void) {

    Test demo;

    demo.const_m1();

    demo.const_m2();

    demo.m3();

    demo.m4();

    while();

    return ;

}

/*测试结果：
start of const_m1() ,call:
this is const_m2()
end of const_m1()
this is const_m2()
this is m3(),call:
this is const_m2()
end of m3()
this is m4()
*/