#include <iostream>
#include <string>
#include <typeinfo>
#include <cstdio>
using namespace std;

class Base {
};

class Derived : public Base {
};


int main() {
	int integer = 1;
	float real32 = 3.14;
	int *ptr_integer = &integer;
	
	cout << "type of integer = " << typeid(integer).name() << endl;
	cout << "type of real32  = " << typeid(real32).name() << endl;
	cout << "type of ptr_integer = " << typeid(ptr_integer).name() << endl;
	
	const std::type_info& r1 = typeid(cout << integer);
	cout << endl;
    cout << "'cout<< integer' has type : " << r1.name() << endl;
    
    const std::type_info& r2 = typeid( printf("%f\n", real32) );
    cout << "'printf(\"%f\\n\", real32)' has type : " << r2.name() << endl;
    
    Base b;
    Derived d;
    
    cout << "type of b = " << typeid(b).name() << endl;
    cout << "type of d = " << typeid(d).name() << endl;
    
    Base *p = (Base *) &b;
    cout << "type of p = " << typeid(p).name() << endl;
    Base *q = (Base *) &d;
    cout << "type of q = " << typeid(q).name() << endl;
    cout << "type of *q = " << typeid(*q).name() << endl;
    
    if (typeid(p) == typeid(q)) {
    	cout << "p and q are the same" << endl;
    }
    
    if (typeid(*p) == typeid(*q)) {
    	cout << "*p and *q are the same" << endl;
    } else {
    	cout << "*p and *q are different" << endl;
    }
    
	return 0;
}