I'm creating a program that lets the user select between 1 of 6 lo

So the program I'm running starts of with 6 loops. each loop is inside of its own if/else if statement. I am getting an error that says 'if' without 'else'. Does this mean I just need to put an else statement at the end the maybe says something like "invalid entry" or something?? I think this is correct if not please help. Thank you in advance.