// petcount.cpp - Script 9.1
#include <iostream>
#include <string>
// Declare the class.
class Pet {
public:
// Constructor and destructor.
Pet(std::string theName);
~Pet();
void eat();
void sleep();
// Static method that will
// return the current value of count:
static int getCount();
protected:
std::string name;
private:
// count will store the number of pets.
static int count;
};
// Declare the inherited classes.
class Cat : public Pet {
public:
Cat(std::string theName);
void climb();
};
class Dog : public Pet {
public:
Dog(std::string theName);
void bark();
};
// Allocate space for the static variable.
int Pet::count = 0;
// Define the methods.
Pet::Pet(std::string theName) {
name = theName;
// A new pet is being created so increment the counter.
count++;
std::cout << "Creating a pet named '" << name << "'\n";
}
Pet::~Pet() {
// The destructor is called when the object ceases to exist
// therefore, decrement the counter.
count--;
std::cout << "Deleting the pet named '" << name << "'\n";
}
void Pet::sleep() {
std::cout << name << " sleeps\n";
}
void Pet::eat() {
std::cout << name << " eats\n";
}
class Cat : public Pet {
Cat::Cat(std::string theName) : Pet(theName) {
}
void Cat::climb() {
std::cout << name << " climbs a tree\n";
}
Dog::Dog(std::string theName) : Pet(theName) {
}
void Dog::bark() {
std::cout << name << " goes 'woof- woof'\n";
}
int main() {
// Create two objects.
Cat cat("Garfield");
Dog dog("Odie");
// Print the current pet count.
std::cout << "You own " << Pet::getCount() << " pets\n";
// Create another object
// Within a seperate code block.
{
Cat anotherCat("Geraldine");
std::cout << "Now, you own " << anotherCat.getCount() << " pets\n";
// anotherCat goes out of scope.
// The compiler will call anotherCat's destructor.
}
// Repeat the count.
std::cout << "And you're back to " << Pet::getCount() << " pets\n";
std::cout << "Press Enter or Return to continue. ";
std::cin.get();
return 0;
}I don't understand why the program isn't compileing? I get this when I try to compile and run the program:
line file message
71 C:\Dev-Cpp\petcount.cpp redefinition of `class Cat'
Can anyone help me understand why it's not compileing or fix this program? Many thanks in advance!
