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 class ErrorCode : uint8_t{
    None = 0,
    Timeout = 1,
    Overflow = 2,
    Invalid = 3 
};
// Implement:
// const char* toString(ErrorCode e);
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";
    }
}
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;
}

Solving Approach