/* Lets stay simple, we will consider you are storing your
   binary sequence in a char[20] for example */

   int main(void) {
     sendToProcess(PID, 12);
   }

   void sendBinarySequence(sequence, PID) {
     loop through sequence {
        /* The best way here is to always send 4 bytes, increment a value so
           the process A don't have to tell you when the sending is done
        */
        if (bit == 1)
          kill(PID, SIGUSR1);
        else if (but == 0)
          kill(PID, SIGUSR2);
       /* Wait for the signal of the process A, we are using ping-pong
       */
     }
   }

   void sendToProcess(PID, NB_TO_SEND) {
     // Send 85 to the process
     char binary[20];

     convertNbToBinary(&binary[0], 85); /* This is the first integrer we
     will send, then the process A will know we will send integrer. */
     sendBinarySequence(binary, PID);
   }