#include <iostream>
#include <cmath>    // pour pow(x,y)

/* ------------------------------------------------------------------
    QUOI
       Fonction principale
       
   ------------------------------------------------------------------ */
int main() {

	// Définition de 1 Mo
	int un_Mo = 1 << 20;
	std::cout << "1 Mo = " << un_Mo << " octets" << std::endl;
	
	int v = 137;
	
	// multiplication par 8=2^3 de v
	int v_mul_8 = v << 3;
	std::cout << v << " * 8 = " << v_mul_8 << std::endl;
	
	// division par 2 = 2^1 de v
	int v_div_2 = v >> 1;
	std::cout << v << " / 2 = " << v_div_2 << std::endl;

	// utilisation des décalages
	std::cout << "-------------" << std::endl;
	for (int i = 0; i < 6; ++i) {
		std::cout << "2^" << i << " = " << (1 << i) << std::endl;
	}	

	// utilisation de la fonction (power) pow(x,y)
	// dont la signature est double pow(double x, double y);
	std::cout << "-------------" << std::endl;
	for (int i = 0; i < 6; ++i) {
		std::cout << "2^" << i << " = " << pow( 2, i ) << std::endl;
	}	
	
	return EXIT_SUCCESS;
	
}