Error Codes Enum

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

// your code here :- declare enum class ErrorCode 
// ErrorCode has 4 values of type uint8_t --> None, Timeout, Overflow and Invalid 

enum class ErrorCode : uint8_t {
    None = 0,
    Timeout = 1,
    Overflow = 2,
    Invalid = 3
};

// define a function that returns the string of input error code
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";
    }
}

int main() {
   int x;
   cin >> x;
   ErrorCode e = static_cast<ErrorCode>(x);
   cout << toString(e);
   return 0;
}