编辑代码

#include <iostream>
using namespace std;
int main(int argc, const char** argv) {
    int a = 10;
    const int* p = &a;  
    const int ca = 30;
    int* q;
    
    cout << "a adress is:\t" << &a << "\ta is:\t" << a << endl;
    cout << "p adress is \t" << p << "\t*p is \t" << *p << endl;
    q = const_cast<int*>(p);
    *q = 24;
    cout << "a adress is:\t" << &a << "\ta is:\t" << a << endl;
    cout << "p adress is \t" << p << "\t*p is \t" << *p << endl;
    cout << "q adress is \t" << q << "\t *q is\t" << *q << endl;
    cout << "=======================" << endl;
    p = &ca;
    q = const_cast<int*>(p);
    *q = 50;   
    cout << "ca adress is:\t" << &ca << "\tca is:\t" << ca << endl; 
    cout << "p adress is \t" << p << "\t*p is \t" << *p << endl;
    cout << "q adress is \t" << q << "\t *q is\t" << *q << endl;
    cout << "=======================" << endl;
    // p = &ca;
    int& l  = const_cast<int&>(ca);
    l++;
    // l = 60;  
    cout << "ca adress is:\t" << &ca << "\tca is:\t" << ca << endl; 
    cout << "p adress is \t" << p << "\t*p is \t" << *p << endl;
    cout << "q adress is \t" << &l << "\t *q is\t" << l << endl; 
    cout << "=======================" << endl;
     int cc = 11;
    const int aa = cc;
    int* q1 = const_cast<int*>(&aa);
    (*q1)++;
    cout << "ca adress is:\t" << &aa << "\tca is:\t" << aa << endl; 
    cout << "ca adress is:\t" << q1 << "\tca is:\t" << *q1 << endl; 





    return 0;
}