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Problem Statement

Design a program that asks for the number of fat grams and calories in a food item to determine the percentage of calories from fat. Validate input as follows:

The number of fat grams must be at least $0.$

The number of calories must be at least $0.$

The number of calories cannot be less than fat grams $*9.$

After input has been validated, use the following formula to determine the percentage of calories from fat:

Percentage of calories from fat $=($fat grams $*9)/$ calories.

Your program should consist of the following:

Module main. Calls getFat, getCalories, and showPercent.

Function getFat. Accepts user input of fat grams. Validate user input as a non$-$negative number and return valid fat grams.

Function getCalories. Accepts user input of total calories. Validate user input as a number that is non$-$negative and greater than or equal to $($fat grams $*9).$ Return a valid number of calories.

Module showPercent. Displays percent of fat in the food item, determined by this formula: $($fat grams $*9)/$ calories. Displays a message indicating the food item is "low fat" if the percentage of fat is less than $30\%(0\mathrm{.}3).$

Expected Output

Your output should be similar to the following:

Please enter the number of fat grams: $20$

Please enter the number of calories: $100$

The number of calories cannot be less than the number of fat grams $*9.$

Please enter the number of calories. $200$

The percentage of calories from fat is $80\mathrm{.}0$ percent.

Please enter the number of fat grams: $-1$

The number of fat grams cannot be less than $0.$

Please enter the number of fat grams. $10$

Please enter the number of calories. $350$

The percentage of calories from fat is $25\mathrm{.}7.$

That food item is considered "low fat".