Concept explainers
FatGram Class
Design a class with a method that stores the number of calories and fat grams in a food item. The class should have a method that returns the percentage of the calories that come from fat. One gram of fat has 9 calories, so:
Calories from fat = fat grains * 9
The percentage of calories from fat can be calculated as:
Calories from fat ÷ total calories
Demonstrate the class in a
Because the number of calories from fat cannot be greater than the total number of calories, if the user enters a number for the calories from fat that is greater than the total number of calories, the program should display an error message indicating that the numbers are invalid.
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