using System;

name space cannang,chieucao,BMI;

{

    Oreferences

    class program

    {

      oreferences

      Static  void Main(string[] args)

      {

        //1.Khai báo biến

          double chieucao,cannang, BMI;

          string mgs="";

          Console.Write("Nhap chieu cao cua ban vao day(vidu: 1.5: ");

          chieucao = Convert.ToDouble(Console.ReadLine());

          BMI  = cannang .Pow(chieucao, 2);

          if(BMI==18.5)

          {

             mgs="Ban hoi gay";

          }

          else if(BMI==24.9)

          {

             mgs="Ban binh thuong";

          }

          else if(BMI>=29.9)

          {

              mgs="Ban hoi beo";

          }

          else if(BMI <= 34.9)

          {

              mgs="Ban beo phi cap do 1";

          }

          else if(BMI==39.9)

          {

              mgs="Ban beo phi cap do 2";

          }

          else

          {

              mgs="Ban beo phi cap do 3";

          }

        Console.WriteLine("......KET QUA CHUONG TRINH......")

        Console.WriteLine("chieucao :{0}, cannang: (1)", chieucao, cannang );

        Console.WriteLine("BMI :{0}", BMI);

        Console.WriteLine(mgs);

        Console.ReadKey();