Explain this thanks

Question

I hadn't declared any variables so I tested it with a word or a number and its output is always a number Console.WriteLine(Console.Read());

Answer 1

You should tell the program what is the data type of input. For string,try this
string str=Console.Read();
Console.WriteLine(str);

Answer 2

[Microsoft Documentation]
https://docs.microsoft.com/en-us/dotnet/api/system.console.read
`Read` method reads next character from the standard input stream. Internally treats the character read as number, based on its ASCII code (most likely but may not always be).
[Difference between Read & ReadLine]
https://stackoverflow.com/questions/6825943/difference-between-console-read-and-console-readline