Error Code Mapping

#include <iostream>
#include <cstdint>
using namespace std;

// Declare a scoped enum class ErrorCode : uint8_t
// with the following explicit values:
// None = 0
// Timeout = 1
// Overflow = 2
// Invalid = 3
enum ErrorCode{
    None = 0, Timeout = 1, Overflow = 2, Invalid = 3
};

// Implement:
// const char* toString(ErrorCode e);
const char * toString(ErrorCode e){
    switch(e){
        case None: return "None";
        case Timeout: return "Timeout";
        case Overflow: return "Overflow";
        case Invalid: return "Invalid";
        default: " ";
    }
}

int main() {
    int x;
    cin >> x;

    // Input value is guaranteed to be in the range 0&#8211;3
    ErrorCode e = static_cast<ErrorCode>(x);

    cout << toString(e);
    return 0;
}