This document discusses classes and objects in programming. It defines a class as a template that describes the behaviors and states of its object instances. An object is an instance of a class, with its own unique state stored in fields and behaviors defined by methods. The document provides examples of defining a Person class in C++ and then creating multiple Person objects, each with their own name, age, and gender state. It contrasts classes as logical entities that don't use memory versus objects as physical entities that do allocate memory.

1. GROUP 2: CLASSES
AND OBJECTS
PREPARED BY:
1. AAMINO
2. CABDULAHI
3. CABDISALAM
4. CABDIQAFAR
5. AXMED XIDIG

2. OBJECTS AND CLASSES
• Object − Objects have states and behaviors. Example: A
dog has states - color, name, breed as well as behaviors –
wagging the tail, barking, eating. An object is an instance
of a class.
• Class − A class can be defined as a template/blueprint
that describes the behavior/state that the object of its type
support.

3. OBJECTS
• Let us now look deep into what are objects. If we consider the real-world, we can find many
objects around us, cars, dogs, humans, etc. All these objects have a state and a behavior.
• If we consider a dog, then its state is - name, breed, color, and the behavior is - barking,
wagging the tail, running.
• If you compare the software object with a real-world object, they have very similar
characteristics.
• Software objects also have a state and a behavior. A software object's state is stored in fields
and behavior is shown via methods.
• So in software development, methods operate on the internal state of an object and the object-
to-object communication is done via methods.

4. DIFFERENCES B/W CLASSES AND OBJECTS
No
.
Object Class
1) Object is an instance of a class. Class is a blueprint or
template from which
objects are created.
2) Object is a real world entity such as pen,
laptop, mobile, bed, keyboard, mouse, chair
etc.
Class is a group of
similar objects.
3) Object is a physical entity. Class is a logical entity.
4) Object is created many times as per
requirement.
Class is declared once.
5) Object allocates memory when it is created. Class doesn't allocated
memory when it is
created.

5. CREATING CLASS IN C++
class Qof{
public:
string magac;
int da_da;
string jinsiga;
void shaqo() {
cout << “waan dhaqeeyaa” ;
}
void hurdo() {
}
void salaad_tukasho() {
}
}

6. CREATING OBJECTS IN C++
#include <iostream>
using namespace std;
int main () {
Qof aamino;
Qof cabdisalaam;
Qof Cabdiqafaar;
Qof Axmed_Xidig;
Qof Cabdulaahi;
aamino.magac = “aamino”;
aamino.da_da = 20;
aamino.jinsiga = “dhadig”;
aamino.shaqo();
}

7. SUMMARIZE
• A class is a user-defined type that describes
what a certain type of object will look like. A
class description consists of a declaration and a
definition. ... An object is a single instance of a
class. You can create many objects from the
same class type.