Const_cast, reinterpret_cast, static_cast usage

///////////////////////////////////////////////////////////////////////////////////  FileName    :   cast_item27.cpp//  Version     :   0.10//  Author      :   Ryan Han//  Date        :   2013/10/31 15:43:55//  Comment     :  //    ///////////////////////////////////////////////////////////////////////////////#include <iostream>using namespace std;int main() {    //static_cast    int a = 4;    a = 5;    const int b = static_cast<const int>(a);    cout << "b is: " << b << endl;        //dynamic_cast    //see D:\cygwin\home\baoweih\code_book\c++ primer\p838_dynamiccast.h        //reinterpret_cast    char* k = reinterpret_cast<char*>(b);            //const_cast    //http://www.cnblogs.com/dracohan/p/3417842.html    const int* i = &b;    //compile error, invalid conversion from ¡®const int*¡¯ to ¡®int*¡¯    //int* j = i;    int* j = const_cast<int*>(i);    //successfully change a const value    *j = 6;    cout << "b is: " << b << endl;        //reference    const int& l = b;    int& m = const_cast<int&>(l);    //error: assignment of read-only reference ¡®l¡¯    //l = 7;    //successfully change a const reference    m = 7;    cout << "b is: " << b << endl;    //const point    const int* const pint = new int(1024);    // can‘t change *pint    //*pint = 1023;    // cant‘ change pint also    //pint = new int(1023);    int* const fake_pint = const_cast<int* const>(pint);    // can change *pint now    *fake_pint = 1023;    // still cant‘ change pint also    //fake_pint = new int(1023);    cout << "*fake_pint is: " << *fake_pint << endl;                return 0;}