01.Daily_Calorie_Intake

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _01.Daily_Calorie_Intake
{
    class Daily_Calorie_Intake
    {
        static void Main(string[] args)
        {
            //Women: BMR = 655 + (9.563 x weight in kg) +(1.850 x height in cm) – (4.676 x age in years)

            //1.    W – weight in pounds (lbs.)
            decimal weightInPounds = decimal.Parse(Console.ReadLine());
            //2.    H – height in inches
            decimal heightInInches = decimal.Parse(Console.ReadLine());
            //3.    A – age
            decimal age = decimal.Parse(Console.ReadLine());
            //4.    G – gender
            string gender = Console.ReadLine().ToLower();
            //5.    E – workouts per week
            decimal workoutsPerWeek = decimal.Parse(Console.ReadLine());

            decimal weightInkg = weightInPounds / 2.20M;
            decimal heightInCm = heightInInches * 2.54M;


            decimal bmrMen = 0.0M;
            decimal bmrWomen = 0.0M;

            //No workouts DCI = BMR * 1.2
            //1–3 workouts per week DCI = BMR * 1.375
            //4–6 workouts per week DCI = BMR * 1.55
            //7–9 workouts per week DCI = BMR * 1.725
            //Extra heavy workouts DCI = BMR * 1.9

            decimal dci = 0.0M;

            switch (gender)
            {
                //Men: BMR = 66.5 + (13.75 x weight in kg) + (5.003 x height in cm) – (6.755 x age in years)

                case "m": bmrMen= 66.5M + (13.75M * weightInkg) + (5.003M * heightInCm) - (6.755M * age);

                    if (workoutsPerWeek == 0)
                    {
                        dci = Math.Floor(bmrMen * 1.2M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 1M && workoutsPerWeek<= 3M)
                    {
                        dci = Math.Floor(bmrMen * 1.375M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 4M && workoutsPerWeek<= 6M)
                    {
                        dci = Math.Floor(bmrMen * 1.55M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 7M && workoutsPerWeek <= 9M)
                    {
                        dci = Math.Floor(bmrMen * 1.725M);
                        Console.WriteLine(dci);
                    }
                    else
                    {
                        dci = Math.Floor(bmrMen * 1.9M);
                        Console.WriteLine(dci);
                    }
                    break;

                //Women: BMR = 655 + (9.563 x weight in kg) + (1.850 x height in cm) – (4.676 x age in years)

                case "f":
                    bmrWomen = 655M + (9.563M * weightInkg) + (1.850M * heightInCm) - (4.676M * age);

                    if (workoutsPerWeek == 0M)
                    {
                        dci = Math.Floor(bmrWomen * 1.2M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 1M && workoutsPerWeek <= 3M)
                    {
                        dci = Math.Floor(bmrWomen * 1.375M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 4M && workoutsPerWeek <= 6M)
                    {
                        dci = Math.Floor(bmrWomen * 1.55M);
                        Console.WriteLine(dci);
                    }
                    else if (workoutsPerWeek >= 7M && workoutsPerWeek <= 9M)
                    {
                        dci = Math.Floor(bmrWomen * 1.725M);
                        Console.WriteLine(dci);
                    }
                    else
                    {
                        dci = Math.Floor(bmrWomen * 1.9M);
                        Console.WriteLine(dci);
                    }
                    break;
                default:
                    break;
            }
        }
    }
}