Coding With Joseph

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C++ Quiz #39

Diamond Inheritance Ambiguity

mediumInheritance

This code fails to compile. What is the issue?

📄 Code

1#include <iostream>
2using namespace std;
3 
4class Device {
5public:
6    void turnOn() {
7        cout << "Device on" << endl;
8    }
9};
10 
11class Phone : public Device {};
12class Camera : public Device {};
13 
14class SmartPhone : public Phone, public Camera {};
15 
16int main() {
17    SmartPhone sp;
18    sp.turnOn();  // ERROR
19    return 0;
20}