Search:

You have guess defined as an int, but Console.ReadLine() returns a string. That is the mismatch. That's why I gave you this line:
string guess_str = Console.ReadLine();
Then you can convert it to...

BioPhysEngr, I agree that using "goto" is a bad practice. But why do modern languages, including C#, allow its usage? It is an unnecessary statement so it shouldn't be included in the language.

The guess string must be converted to an int before the comparison takes place.
Here are a few hints:


guess_str = Console.ReadLine();
guess_str =...