Esempio:

codice:
#include <iostream.h>

int main() {
	cout << "Decimale: " << (int) 'a' << endl;
	cout << "Decimale: " << (int) 'z' << endl;
	cout << "Decimale: " << 1989 << endl << endl;
	cout << "Esadecimale: " << hex << (int) 'a' << endl;
	cout << "Esadecimale: " << hex << (int) 'z' << endl;
	cout << "Esadecimale: " << hex << 1989 << endl;

	return 0;
}