ECE160 - Lesson 11
Inheritance, Composition, Debugging & Testing
Professor Hong
## Protected Example
* Protected means it is private to everything outside of the class and its derived classes.
```
//: C14:Protected.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// The protected keyword
#include
using namespace std;
class Base {
int i;
protected:
int read() const { return i; }
void set(int ii) { i = ii; }
public:
Base(int ii = 0) : i(ii) {}
int value(int m) const { return m*i; }
};
class Derived : public Base {
int j;
public:
Derived(int jj = 0) : j(jj) {}
void change(int x) { set(x); }
};
int main() {
Derived d;
d.change(10);
} ///:~
```