#include <iostream.h>
//-----------------------------------------------------
int main()
{
  const int BIT = 32;
  char binaire[BIT] = {'0'}, resultat[BIT] = {'\0'};
  int taille = 0;
  int decimal;
  cout << "Valeur décimale : ";
  cin >> decimal;
  for (int i=0; decimal; i++, taille++, decimal/=2)
    binaire[i] = decimal%2 + '0';
  for (int i=0; i<taille; i++)
    resultat[i] = binaire[taille-i-1];
  cout << resultat;
  cin.get();
  cin.get();
  return 0;
}
//-----------------------------------------------------