What's the problem with the following code snippet? 1 class Key { public: Key(){} void setkey(char character){ this->character = character; 2 3 4 5 char getkey(){ return character; 7 8 9 10 11 private: 12 char character; 13 }; 14 class Keyboard { public: Keyboard(){} 15 16 17 18 private: Key keys[104]; 19 20 21 };

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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What's the problem with the following code snippet?

See picture for details. Thank you

## Problem Analysis with Code Snippet

### Code Snippet:

```cpp
class Key {
public:
    Key(){}
    void setKey(char character){
        this->character = character;
    }
    char getKey(){
        return character;
    }
    
private:
    char character;
};

class Keyboard {
public:
    Keyboard(){}
    
private:
    Key keys[104];
};
```

### Question:
What's the problem with the following code snippet?

### Answer Choices:
- Key is not an array
- Missing default constructors
- Invalid use of private data members
- No problem
- Can't embed an object within another one

### Selected Answer:
- **Invalid use of private data members**

### Explanation:

The code displays two classes, `Key` and `Keyboard`. The `Key` class includes private data members and provides public methods to interact with them. The `Keyboard` class contains an array of `Key` objects.

The highlighted issue is the "Invalid use of private data members," suggesting a concern with accessing or improperly implementing encapsulation principles. However, in this snippet, the use of private data members (`character` in `Key`) through public methods (`setKey` and `getKey`) is typical for encapsulation, and there might not be an apparent issue from the code provided. Proper context or additional constraints might be required to identify the problem correctly.
Transcribed Image Text:## Problem Analysis with Code Snippet ### Code Snippet: ```cpp class Key { public: Key(){} void setKey(char character){ this->character = character; } char getKey(){ return character; } private: char character; }; class Keyboard { public: Keyboard(){} private: Key keys[104]; }; ``` ### Question: What's the problem with the following code snippet? ### Answer Choices: - Key is not an array - Missing default constructors - Invalid use of private data members - No problem - Can't embed an object within another one ### Selected Answer: - **Invalid use of private data members** ### Explanation: The code displays two classes, `Key` and `Keyboard`. The `Key` class includes private data members and provides public methods to interact with them. The `Keyboard` class contains an array of `Key` objects. The highlighted issue is the "Invalid use of private data members," suggesting a concern with accessing or improperly implementing encapsulation principles. However, in this snippet, the use of private data members (`character` in `Key`) through public methods (`setKey` and `getKey`) is typical for encapsulation, and there might not be an apparent issue from the code provided. Proper context or additional constraints might be required to identify the problem correctly.
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