49. Error Code Mapping

Your task is to declare a scoped enum class named ErrorCode with the following explicit numeric values:

• None = 0
• Timeout = 1
• Overflow = 2
• Invalid = 3

The value ErrorCode::Invalid represents an explicit error state.

Implement a function:

const char* toString(ErrorCode e);

that returns the corresponding string:

• "None"
• "Timeout"
• "Overflow"
• "Invalid"

The program will read an integer from standard input and convert it to an ErrorCode as follows:

• If the input value is 0, 1, 2, or 3, it maps directly to the corresponding ErrorCode

Finally, print the string representation of the resulting ErrorCode.

Example 1

Input:

0

Output:

None 

Example 2

Input:

2

Output:

Overflow 

Example 3

Input:

3

Output:

Invalid