#include
using namespace std;
//------static_cast--------
// int main()
// {
// int a = 1;
// float b = 3.14;
// int *p_a = &a;
// float *p_b = &b;
// float c = static_cast(b);
// double d = static_cast©;
// float *e = static_cast(p_a);
// cout<<c<<d<<endl;
// return 0;
// }
//------const_cast--------
void static_cast_demo()
{
int i = 0x12345;
char c = ‘c’;
int *pi = &i;
char *pc = &c;
c = static_cast<char>(i);
cout<<c<<endl;
//pc = static_cast<char*>(pi);//error
}
void const_cast_demo()
{
const int& j = 1;// read_only bianliang
//j = 99;//error --read_only reference
cout<<"before-> j = "<<j<<endl;
int& k = const_cast<int&>(j);
k = 55;//can modifier ;
cout<<"after->j = "<<j<<endl;
const int x = 2;//constant
cout<<"before->x = "<<x<<endl;
// x =9;//read_only reference
int& y = const_cast<int&>(x);
// y = 66;
cout<<"y = "<<y<<endl;
// int z = const_cast<int>(x);//error
}
void reinterpret_cast_demo()
{
int i = 0;
char c = ‘c’;
int *pi = &i;
char *pc = &c;
pc = reinterpret_cast<char*>(pi);
pi = reinterpret_cast<int*>(pc);
// pi = reinterpret_cat<int*>(i);//error
// c = reinterpret_cast(i); //error jibenleixingbunnegzhuanhuan
}
void dynamic_cast_demo()
{
int i = 0;
int pi = &i;
//char pc = dynamic_cast<char*>(pi);//target is not pointer or reference to class)
}
int main()
{
static_cast_demo();
const_cast_demo();
reinterpret_cast_demo();
dynamic_cast_demo();
return 0;
}