Ok what is the best way to stop a cat from constantly begging for food?



My 11 year old male cat gets a 6 ounce can of cat food 1/2 in morning the other half in the early evening he pesters me starting early in the evening and doesent stop until he gets a snack at night. He bugs me when I go to bed by getting right where I want to sleep and licking my face, its getting pretty annoying. Help