input: Write a python function to create a Cat object and make it eat a given food.
  assert feed_cat("Whiskers", "fish")=="Whiskers is eating fish!"
  assert feed_cat("Luna", "chicken")=="Luna is eating chicken!"
  assert feed_cat("Simba", "tuna")=="Simba is eating tuna!"
output: def feed_cat(name, food):
      class Cat:
          def __init__(self, name):
              self.name = name
  
          def eat(self, food):
              return f"{self.name} is eating {food}!"
  
      cat = Cat(name)
      return cat.eat(food)