using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("请输入学生成绩：");
int score = int.Parse(Console.ReadLine());
if (score > 90)
{
Console.WriteLine("该学生优秀");
}
else if (score > 80)
{
Console.WriteLine("该学生优秀");
}
else if (score > 70)
{
Console.WriteLine("该学生中等");
}
else if (score >= 60)
{
Console.WriteLine("该学生及格");
}
else
{
Console.WriteLine("该学生不及格");
}
/*
int temp = score/10;
switch (temp)
{
case 9:
Console.Wr
