[user02@FC4 Lesson08]$ cat -n dog_cat.cpp

   1  #include <iostream>
   2  using namespace std;
   3
   4  int main()
   5  {
   6     int user_owns_a_dog = 1;
   7     int user_owns_a_cat = 0;
   8
   9     if (user_owns_a_dog)
  10        cout << "Dogs are great" << endl;
  11
  12     if (user_owns_a_cat)
  13        cout << "Cats are great" << endl;
  14
  15     if ((user_owns_a_dog) && (user_owns_a_cat))
  16        cout << "Dogs and cats can get along" << endl;
  17
  18     if ((user_owns_a_dog) || (user_owns_a_cat))
  19        cout << "Pets are great!" << endl;
  20
  21     return 0;
  22  }

[user02@FC4 Lesson08]$ g++ -o dog_cat dog_cat.cpp
[user02@FC4 Lesson08]$ ./dog_cat
Dogs are great
Pets are great!