using System;

public class Person{

    public string Name{get; set;}

    public int Age{get; set;}

    public char Sex{get; set;}

    public double Weight{get; set;}

    public double Height{get;set;}

    public double BMI{get; set;}

    public Person(){

        Name = null;

        Age = 0;

        Sex = 'M';

        Weight = 0;

        Height = 0;

    }

    public Person(string name, int age, char sex){

        Name = name;

        Age = age;

        Sex = sex;

        Weight = 0;

        Height = 0;

    }

    public Person(string PName, int PAge, char PSex, double PWeight, double PHeight){

        Name = PName;

        Age = PAge;

        Sex = PSex;

        Weight = PWeight;

        Height = PHeight;

    }

    public int CalculateBMI(){

        const int Malnutrition = -1;

        const int Normal = 0;

        const int OverWeight = 1;

        BMI = Weight / Math.Pow(Height, 2);

        if(BMI < 18.5){

            return Malnutrition;

        }

        else if(BMI > 25){

            return Normal;

        }

        else{return OverWeight;}

    }

    public bool CheckAge(){

        if(Age >= 18){

            return true;

        }

        else{ return false;}

    }

    public void CheckSex(){

        if(Sex != 'M'|| Sex != 'F'){

            Sex = 'M';

        }

    }

    public void ShowValues(){

        Console.WriteLine("Name: " + Name);

        Console.WriteLine("Age: " + Age);

        Console.WriteLine("Sex: " + Sex);

        Console.WriteLine("Height: " + Height);

        Console.WriteLine("Weight: " + Weight);

        Console.WriteLine("Adult: " + CheckAge());

        Console.WriteLine("BMI: [-1].Malnutrition [0].Normal [1].Overweight ");

        Console.WriteLine("Your BMI is: " + CalculateBMI());

    }

}

public class Program

{

    public static void Main()

    {

        Person person1 = new Person();

        Console.WriteLine("Enter your name: ");

        person1.Name = Console.ReadLine();

        Console.WriteLine("Enter your age: ");

        person1.Age = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter your gender: ");

        person1.Sex = Convert.ToChar(Console.ReadLine());

        Console.WriteLine("Enter your weight: ");

        person1.Weight = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter your height: ");

        person1.Height = Convert.ToDouble(Console.ReadLine());

        person1.CalculateBMI();

        person1.CheckSex();

        Console.Clear();

        Console.WriteLine("<------RESULTS------>");

        person1.ShowValues();

        Person person2 = new Person("Cristian", 20, 'M');

        Console.WriteLine(person2.Name + " enter you height: ");

        person2.Height = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine(person2.Name + " enter your weight: ");

        person2.Weight = Convert.ToDouble(Console.ReadLine());

        person2.CalculateBMI();

        person2.CheckSex();

        Console.Clear();

        Console.WriteLine("<------RESULTS------>");

        person2.ShowValues();

        Person person3 = new Person("Juan", 35, 'M', 80, 1.80);

        person3.CalculateBMI();

        person3.CheckSex();

        Console.WriteLine("<------RESULTS------>");

        Console.Clear();

        person3.ShowValues();

    }

}