//&% nand_ch_9_2_c
#include <iostream.h>
 
  class NAND_2 {
   
private:
      int out_1;   //sortie 
  
     int set_out_1()
 {
  return 1 - (in_1 * in_2);
}

         public:
  int in_1; /*entree 1*/
  int in_2; /*entree 2*/

   NAND_2() 
  {       in_1 = 0 ; in_2 = 0;
      out_1 = set_out_1();
  }   



    /*constructeur avec deux arguments */
    //        NAND_2(int i1, int i2) {
    //  in_1 = i1; in_2 = i2;
    //    out_1 = set_out_1();
    //    }

   

int lire_in_1() {
          return in_1;
       }
       void ecrire_in_1(int val) {
        cout << " Ecriture d'une valeur dans in_1" << endl;
        in_1 = val;
         out_1 = set_out_1();
      }

int lire_in_2() {
      return in_2;
    }
    
void ecrire_in_2(int val) {
     cout << " Ecriture d'une valeur dans in_2" << endl;
      in_2 = val;
     out_1 = set_out_1();
    }

int lire_out_1() {
      return out_1;
    }

  };


int main ()
{
   NAND_2 nnd;
  

   cout << "in_1: " << nnd.in_1 << endl;
   cout << "in_2: " << nnd.in_2 << endl;
   cout << "in_1: " << nnd.lire_in_1() << endl;
   cout << "in_2: " << nnd.lire_in_2() << endl;
   cout << "out_1: " << nnd.lire_out_1() << endl;
   nnd.in_1=1;
   nnd.in_2=1;
   nnd.ecrire_in_1(1);
   nnd.ecrire_in_2(1);
   cout << "in_1: " << nnd.in_1 << endl;
   cout << "in_2: " << nnd.in_2 << endl;
   //   cout << "out_1: " << nnd.out_1() << endl;
  cout << "out_1: " << nnd.lire_out_1() << endl;
  
}