#include using namespace std; //Make a base class class Base{ public: //Call the constructor with the set function. We doesn't directly put the Data into data, because the necessary conditions needs to be checked. Base(int Data){ setData(Data); } //Make a get function to call the private member. With the help of this process our private data member is still private. int getData(){ return data; } //Make a set function to don't allow to direct access to our data member and make the necessary checks. void setData(int newData){ if(newData>=0 && newData<=35){ data = newData; }else { //If there is such a bad condition throw an error! throw invalid_argument("Data should be 0-35!"); } } private: int data; }; //Make the inheritance as protected to don't allow to call the public functions of Base class from other parts of program. class Derived:protected Base{ public: //We are directly calling the Base class constructor to write the less code. Derived(int AccessibleData = 0):Base(AccessibleData){} //Make a get function to access the private member of Base class and to be able to access this private member from main function. int getAccessibleData(){ return accessibleData=getData(); } //As we can see we are again writing less code and making the necessary checks. void setAccessibleData(int newAccessibleData){ setData(newAccessibleData); } private: int accessibleData; }; int main() { Derived obj; cout<

Proper Inheritance Model