Error Code Mapping

#include <iostream>
#include <cstdint>

using namespace std;

// 1. Declare the scoped enum class with uint8_t as the underlying type
enum class ErrorCode : uint8_t {
    None = 0,
    Timeout = 1,
    Overflow = 2,
    Invalid = 3
};

// 2. Implement the toString function
// This function takes an ErrorCode and returns a human-readable string.
const char* toString(ErrorCode e) {
    switch (e) {
        case ErrorCode::None:     return "None";
        case ErrorCode::Timeout:  return "Timeout";
        case ErrorCode::Overflow: return "Overflow";
        case ErrorCode::Invalid:  return "Invalid";
        default:                  return "Unknown"; // Safety fallback
    }
}

int main() {
    int x;
    if (!(cin >> x)) return 0;

    // 3. Convert the integer to our ErrorCode enum
    // static_cast is used here because we trust the input range (0-3)
    ErrorCode e = static_cast<ErrorCode>(x);

    // 4. Output the string representation
    cout << toString(e) << endl;

    return 0;
}

Solving Approach