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2.20 LAB: Macronutrients There are three main macronutrients carbohydrates, fat, and protein. Each gram of carbohydrate is 4 calories. Each gram of fat is 9 calories. Each gram of protein is 4 calories. Given the amount of carbohydrates, fat, and protein in grams consumed, output the following two values: the total number of calories consumed. the Protein Energy Ratio. This is the number of grams of protein divided by the sum of the number of grams of fat and carbohydrate. Output the Protein:Energy Ratio value with two digits after the decimal point, which can be achieved as follows: cout