Oh, you have to be determined and not tempted to give the cat food while you eat. Our two rascals has a built-in radar when it comes to food. If we feed them at the same time as we're having our dinner, they gulp down their food then come and beg for more ON THE TABLE. They are quick to jump up on the table and sniff the food so we have to be quick to say NO! and push them down.
Some foods are ok to give them, but don't give them too salty food, too spicy food or too much fish etc. Our kitties love hamburger meat and could kill (well claw) for it!