Custom Resource Management with std::unique_ptr (Deleter)

Medium Smart Pointers

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Problem Statement

Write a C++ program demonstrating `std::unique_ptr` with a custom deleter function to manage legacy resources.

Input Format

A single integer N.

Output Format

Print value managed, followed by custom deleter cleanup log message.

Constraints

-100000 <= N <= 100000

Sample Input

Sample Output

Managed Value: 333
Custom Deleter Executed

Explanation

`std::unique_ptr` supports custom deleters for managing non-standard resources (file descriptors, sockets, C-style malloc).

Starter Code

#include <iostream>
#include <memory>

struct CustomDeleter {
    void operator()(int *ptr) const {
        delete ptr;
        std::cout << "Custom Deleter Executedn";
    }
};

int main() {
    int n;
    if (std::cin >> n) {
        // Write your custom deleter unique_ptr logic here
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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