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what is object in class c++

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Bilal Ahmad answered on October 24, 2020 Popularity 10/10 Helpfulness 2/10

answer what is object in class c++

related classes and objects in c++

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what is object in class c++

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class:
      class is user-defined data type that we use in our programs.
object: 
       object is instance/element of class which inherits all the variables and functions
       from class.
       To access data members and member functions defined in the class, we need to create objects. like obj.brand etc.
Exapmle:
        a car is a class then brand, model etc are its attributes (data members and member functions).
          
When a class is defined, no memory is allocated but when it is instantiated (i.e. an object is created) memory is allocated.

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Contributed on Aug 16 2022

Bilal Ahmad

0 Answers Avg Quality 2/10

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classes and objects in c++

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//Example
#include <iostream>
#include <cstdlib>
#include <cstring>

using namespace std;

class Car {
	//scopes(public-private)

	//private: write in it the attributes of the class created
	//attributes written in the private scope 5as bel class nfso 
	//m2drsh at3amel m3ah 8er gowa el class (m2drsh at3amel m3ah fel main)

private:					
	char name[15];
	char color[10];
	int maxSpeed;
	int model;

	//public: write the functions in it
	//printing, declaring,...variables occur in functions
	//b2dr awsalo mn ay heta (main...)
public:		
  	//constructor
  	Car() {
      strcpy_s(name,"No name");
      strcpy_s(color,"No color");
      maxSpeed=0;
      model=0;
        
    }
	//Setters
	void setName(char n[]) {
		strcpy_s(name, n);
	}
	void setColor(char c[]) {
		strcpy_s(color, c);
	}
	void setMaxSpeed(int s) {
		maxSpeed = s;
	}
	void setModel(int m) {
		model = m;
	}

	//Getters
	char* getName() {
		return name;
	}
	char* getColor() {
		return color;
	}
	int getMaxSpeed() {
		return maxSpeed;
	}
	int getModel() {
		return model ;
	}

	//function to print
	void print() {
		cout << "Name: " << getName() << endl;
		cout << "Color: " << getColor() << endl;
		cout << "Maximum speed: " << getMaxSpeed() << endl;
		cout << "Model: " << getModel() << endl;
	}
};

int main() {
	Car car;					 // Creating an object
	char n[15] = "BMW";
	char c[10] = "Red";
	car.setModel(2022);
	car.setMaxSpeed(250);
	car.setName(n);
	car.setColor(c);
	car.print();
}

Popularity 10/10 Helpfulness 4/10 Language cpp

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Tags: c++

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Contributed on Jun 26 2022

S.Y

0 Answers Avg Quality 2/10

how to write a class in c++

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class Rectangle 
{
	int width, height;
public:
	void set_values (int,int);
    int area() {return width*height;}
};

void Rectangle::set_values (int x, int y)
{
	width = x;
	height = y;
}

Popularity 10/10 Helpfulness 3/10 Language cpp

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Tags: c++

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Contributed on Oct 24 2020

Disgusted Duck

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what is object in class c++

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