Preview:
#include <iostream>

int main () {
  int number;
  int lastNumber;
  std :: cout << "Введите число: ";
  std :: cin >> number;

  while (number != 0) {
    lastNumber = number % 10;
    if (lastNumber != 1 && lastNumber != 0) break;
    number /= 10;
  }

  if (lastNumber == 1 || lastNumber == 0) {
    std :: cout << "Робот все понял!\n";
  } else {
    std :: cout << "Машинный код состоит не только из 0 и 1. Ошибка!\n";
  }
}
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