Question

Complete the FoodItem class by adding a constructor to initialize a food item. The constructor should initialize the name to "None" and all other instance attributes to 0.0 by default. If the constructor is called with a food name, grams of fat, grams of carbohydrates, and grams of protein, the constructor should assign each instance attribute with the appropriate parameter value.

The given program accepts as input a food item name, fat, carbs, and protein and the number of servings. The program creates a food item using the constructor parameters' default values and a food item using the input values. The program outputs the nutritional information and calories per serving for both food items.

Ex: If the input is:

M&M's
10.0
34.0
2.0
1.0
where M&M's is the food name, 10.0 is the grams of fat, 34.0 is the grams of carbohydrates, 2.0 is the grams of protein, and 1.0 is the number of servings, the output is:

Nutritional information per serving of None:
Fat: 0.00 g
Carbohydrates: 0.00 g
Protein: 0.00 g
Number of calories for 1.00 serving(s): 0.00

Nutritional information per serving of M&M's:
Fat: 10.00 g
Carbohydrates: 34.00 g
Protein: 2.00 g
Number of calories for 1.00 serving(s): 234.00

Answer 1

```python

class FoodItem:

def __init__(self, name="None", fat=0.0, carbs=0.0, protein=0.0):

self.name = name

self.fat = fat

self.carbs = carbs

self.protein = protein

def get_calories(self, num_servings):

calories = (self.fat * 9 + self.carbs * 4 + self.protein * 4) * num_servings

return calories

def print_info(self, num_servings):

print("Nutritional information per serving of {}:".format(self.name))

print("Fat: {:.2f} g".format(self.fat))

print("Carbohydrates: {:.2f} g".format(self.carbs))

print("Protein: {:.2f} g".format(self.protein))

print("Number of calories for {:.2f} serving(s): {:.2f}".format(num_servings, self.get_calories(num_servings)))

# Main program

food_item1 = FoodItem()

food_item2 = FoodItem(input(), float(input()), float(input()), float(input()))

food_item1.print_info(1)

food_item2.print_info(float(input()))

```