Perfect Forwarding (std::forward)

Medium Move Semantics

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Problem Statement

Write a C++ program defining a template function utilizing perfect forwarding (`std::forward`) to preserve argument value categories.

Input Format

A single integer N.

Output Format

Print forwarded value.

Constraints

-100000 <= N <= 100000

Sample Input

Sample Output

Forwarded Value: 777

Explanation

Perfect forwarding passes arguments to other functions while preserving their exact lvalue/rvalue category.

Starter Code

#include <iostream>
#include <utility>

void process(int &val) {
    std::cout << "Forwarded Value: " << val << "n";
}

void process(int &&val) {
    std::cout << "Forwarded Value: " << val << "n";
}

template <typename T>
void wrapper(T &&arg) {
    // Write your perfect forwarding logic here
}

int main() {
    int n;
    if (std::cin >> n) {
        wrapper(n);
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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