Question

solve it in c++ 10

1. Define a Pet class that stores the pet's name, age, and weight. Add appropriate constructors, accessor functions, and mutator functions. Also define a function named getLifespan that returns a string with the value "unknown lifespan." Next, define a Dog class that is derived from Pet. The Dog class should have a private member variable named breed that stores the breed of the dog. Add mutator and accessor functions for the breed variable and appropriate constructors. Redefine the getLifespan function to return "Approximately 7 years" if the dog's weight is over 100 pounds and "Approximately 13 years" if the dog's weight is under 100 pounds. Next, define a Rock class that is derived from Pet. Redefine the getLifespan function to return "Thousands of years." Finally, write a test program that creates instances of pet rocks and pet dogs that exercise the inherited and redefined functions. Test all inherited functions in main. int main() { Pet a("Bob",2,50); cout<<a.getLifespan()<<endl; Dog b("Sam",5,150,"Boxer"); cout<<b.getLifespan()<<endl; Rock c; cout<<c.getLifespan()<<endl; return 0;

note:

please do not give me same answer like this

Answer 1

PROGRAM CODE (C++)

Note:

Both interface (header) and implementation files are provided for each class and one cpp file for test program.

Pet.h

// Interface file of Pet Class

#ifndef PET_H   // Header Guards
#define PET_H

#include <iostream>
using namespace std;

class Pet {
  
   private:
      
       // All required member variables
      
       string name;
       int age;
       float weight;
      
   public:
      
       // All required member functions
      
       Pet();                       // Empty constructor
       Pet(string, int, float);   // Constructor to initialize all fields
      
       // Mutator and Accessor functions
      
       void setName(string);
       void setAge(int);
       void setWeight(float);
      
       string getName();
       int getAge();
       float getWeight();
      
       // getLifeSpan function
      
       string getLifeSpan();
};

#endif

Pet.cpp

// Implementation file of Pet Class

#include "Pet.h"

Pet::Pet() {
  
   // Setting default values
  
   name = "tommy";
   age = 15;
   weight = 100;
}

Pet::Pet(string n, int a, float w) {
   name = n;
   age = a;
   weight = w;
}

void Pet::setName(string n){
   name = n;
}

void Pet::setAge(int a){
   age = a;
}
void Pet::setWeight(float w){
   weight = w;
}

string Pet::getName(){
   return name;
}
int Pet::getAge(){
   return age;
}
float Pet::getWeight(){
   return weight;
}

string Pet::getLifeSpan(){
   return "unknown lifespan";
}

Dog.h

// Interface file of Dog Class

#ifndef DOG_H
#define DOG_H

#include "Pet.h"

class Dog : public Pet {
  
   private:
      
       // A member variable needed
      
       string breed;
  
   public:
      
       // Adding constructor and accessor and mutator functions
      
       Dog(string, int, float, string);
      
       void setBreed(string);
       string getBreed();
      
       // Redefining getLifeSpan function
      
       string getLifeSpan();
};
#endif

Dog.cpp

// Implementation file of Dog class

#include "Dog.h"

Dog::Dog(string n, int a, float w, string b) : Pet(n, a, w) {
   //Pet(n, a, w);
   breed = b;
}

void Dog::setBreed(string b){
   breed = b;
}
string Dog::getBreed(){
   return breed;
}

string Dog::getLifeSpan(){
  
   string str = "";
  
   // Following conditions mentioned in question
  
   if(getWeight() > 100)
       str = "Approximately 7 years";
   else if(getWeight() < 100)
       str = "Approximately 13 years";
      
   return str;
}

Rock.h

// Interface file of Rock Class

#ifndef ROCK_H
#define Rock_H

#include "Pet.h"

class Rock : public Pet {
  
   public:
      
       Rock();
          
       // Redefining getLifeSpan function
      
       string getLifeSpan();
};
#endif

Rock.cpp

// Implementation of Rock Class

#include "Rock.h"

Rock::Rock() : Pet(){
}

string Rock::getLifeSpan() {
   return "Thousands of years.";
}

main.cpp

// A Test program

#include <iostream>
#include "Pet.h"
#include "Dog.h"
#include "Rock.h"

using namespace std;

int main() {
  
   Pet a("Bob", 2, 50);
   cout << a.getLifeSpan() << endl;
  
   Dog b("Sam", 5, 150, "Boxer");
   cout << b.getLifeSpan() << endl;
  
   Rock c;
   cout << c.getLifeSpan() << endl;
  
   return 0;
}

SAMPLE OUTPUT

C:\Users\Dell OneDrive\Desktop\CPP July 2020 Pet\Project1.exe unknown lifespan Approximately 7 years Thousands of years. Process exited after 0.2588 seconds with return value o Press any key to continue

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