C++ Encapsulation

Definition:

The meaning of Encapsulation is to make sure that "sensitive" data is hidden from users.To achieve this, you must declare class variables/attributes as private (cannot be accessed from outside the class). If you want others to read or modify the value of a private member, you can provide public get and set methods.

Need of Encapsulation

It is considered good practice to declare your class attributes as private (as often as you can).Encapsulation ensures better control of your data, because you (or others) can change one part of the code without affecting other parts

Increased security of data.

Example:

    #include <iostream>
     using namespace std;

    class Employee {
    private:
    // Private attribute
      int salary;

     public:
    // Setter
      void setSalary(int s) {
          salary = s;
    }
    // Getter
    int getSalary() {
      return salary;
    }
 };
    int main() {

     Employee myObj;
     myObj.setSalary(50000);
     cout << myObj.getSalary();

    return 0;
   }

Output