Single inheritance in OOPs

 #include <iostream>

using namespace std;

class Animal {

public:

    string color;

    void eat() {

        cout << "eats..\n";

    }

    void breathe() {

        cout << "breathes..\n";

    }

};

class Fish : public Animal {

public:

    int fins;

   

    void swim() {

        eat(); // single inheritance , simplest inheritance

        cout << "swims..\n";

    }

};

int main() {

    Fish f1;

    f1.swim();

    f1.eat();

    f1.breathe();

    return 0;

}