(A).  The data members that are members of  some another class
(B). Â The data members which are likely to change in long terms
(C). Â The data members which are intended to be changed
(D). Â The data members which are likely to change in the near future
MCQ Answer: The data members which are likely to change in the near future
C++ Example of data members encapsulation in a class
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#include <iostream> using namespace std; class Rectangle { private: // Variables required for area calculation int Rectangle_Length; int Rectangle_Width; public: // Setter function for Rectangle_Length void setRectangle_Length(int len) { Rectangle_Length = len; } // Setter function for Rectangle_Width void setRectangle_Width(int Width2) { Rectangle_Width = Width2; } // Getter function for Rectangle_Length int getRectangle_Length() { return Rectangle_Length; } // Getter function for Rectangle_Width int getRectangle_Width() { return Rectangle_Width; } // Function to calculate area int getArea() { return Rectangle_Length * Rectangle_Width; } }; int main() { // Create object of Rectangle class Rectangle rectangle1; // Initialize Rectangle_Length using Setter function rectangle1.setRectangle_Length(4); // Initialize Rectangle_Width using Setter function rectangle1.setRectangle_Width(3); // Access Rectangle_Length using Getter function cout << "Rectangle_Length = " << rectangle1.getRectangle_Length() << endl; // Access Rectangle_Width using Getter function cout << "Rectangle_Width = " << rectangle1.getRectangle_Width() << endl; // Call getArea() function cout << "Area = " << rectangle1.getArea(); return 0; } |
Output
Rectangle_Length = 4
Rectangle_Width = 3
Area = 12
Which of the following can be encapsulated?
(A). Â data members
(B). Â member functions
(C). Â both of these
(D). Â None of these
MCQ Answer: (C). Â both of these