Write a program that asks the user to enter the number of calories and fat grams in a food item. The program should display the percentage of the calories that come from fat. One gram of fat has 9 calories; therefore: 

Calories from fat = Fat grams * 9

The percentage of calories from fat can be calculated as follows: 

Calories from fat ÷ Total calories 

If the calories from fat are less than 30 percent of the total calories of the food, it should also display a message indicating the food is low in fat.