Passing Objects via Pointers (Dependency Injection)

Medium Composition & Aggregation

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Problem Statement

Create a `Database` class with a `db_name` string attribute. Create a `Server` class whose constructor requires a `Database*` pointer passed into it. The `Server` constructor should print ‘Server connected to [db_name]’.

Input Format

A single string for the database name.

Output Format

Print the connection message.

Constraints

No spaces in the string.

Sample Input

PostgreSQL

Sample Output

Server connected to PostgreSQL

Explanation

Dependency Injection is a form of aggregation where a class receives its dependencies from the outside via pointers rather than creating them internally.

Starter Code

#include <iostream>
#include <string>

class Database {
public:
    // Write your code here
};

class Server {
public:
    // Write your code here
};

int main() {
    // Inject Database pointer into Server
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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