Friend Classes

Medium Static Members & Friend Functions

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Problem Statement

Create a `Secret` class with a private integer `code` set via constructor. Declare `class Agent` as a friend inside `Secret`. Create the `Agent` class with a method `void reveal(Secret s)` that prints ‘Code: [code]’. Read an integer, instantiate `Secret`, instantiate `Agent`, and call `reveal`.

Input Format

A single integer.

Output Format

Print the formatted code.

Constraints

None

Sample Input

Sample Output

Code: 7

Explanation

When an entire class is declared as a friend, all of its member functions gain access to the private data of the granting class.

Starter Code

#include <iostream>

class Secret {
    // Define private member, constructor, and friend class declaration
};

class Agent {
public:
    // Implement reveal()
};

int main() {
    // Read input, instantiate Secret and Agent, call reveal
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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