利用条件运算符?:计算男女体重情况

  static void Main(string[] args)
        {
            while (true)
            {
                string xb; double sg, tz,m;
：                Console.Write("请输入您的性别：");                                                    //利用逻辑运算符?:来测算体重，先判断性别。（？；）如果是男的话用100，女的话用110
                xb=Console.ReadLine();
                Console.Write("请输入您的身高：");
                sg = Convert.ToDouble(Console.ReadLine());
                Console.Write("请输入您的体重：");
                tz = Convert.ToDouble(Console.ReadLine());
                int x=(xb=="男"?100:110);
                m = tz - sg + x;
                Console.WriteLine(m>3?"您该减肥了":m<-3?"您该增加营养":"体重正常");

            
               
                           
                Console.ReadLine();
            }
        }