Hot to get correct output using virtual?

Question

Is it any error?
#include <iostream>
using namespace std;

class Animal
{
public:
virtual void eat() { cout << "I'm eating generic food."; }
};

class Cat : public Animal
{
public:
void eat() { cout << "I'm eating a rat.\n"; }
};

void func(Animal xyz);

int main()
{
Animal animal;
Cat cat;

animal.eat();
cat.eat();

func (animal);
func (cat);//need output I'm eating a rat.
}

void func(Animal xyz)
{
xyz.eat();
}

Answer 1

You need to pass by reference, if you pass it by value, a copy of type "Animal" is generated

https://code.sololearn.com/c302nL6F5irR/?ref=app