【1022】10成绩分析判断

namespace _10成绩分析判断
{
    class Program
    {
        static void Main(string[] args)
        {
            //调试
            //逐过程
            //逐语句
            //一行一行的调试
            //F11逐行调试

            string str = "";

            Console.WriteLine("输入成绩");
          
            int score = Convert.ToInt32(Console.ReadLine());


            if (score >= 90)
            {
                //Console.WriteLine("A");
                str = "A";

            }
            else if (score >= 80)
            {
                //Console.WriteLine("B");
                str = "B";

            }
            else if (score >= 70)
            {
                //Console.WriteLine("C");
                str = "C";
            }
            else if (score >= 60)
            {
                //Console.WriteLine("D");
                str = "D";
            }
            else
            {
                //Console.WriteLine("E");
                str = "E";
            }
            Console.WriteLine(str);
            Console.ReadKey();

             
           
        }
    }
}