# include<iostream>
int main()
{
using namespace std;
while (1)
{
cout << "请输入成绩：";
int num;
cin >> num;
if (num <= 100 && num >= 0)
{
num /= 10;
switch (num)
{
case 10:case 9:cout << "水平A" << endl; break;
case 8:cout << "水平B" << endl; break;
case 7:cout << "水平C" << endl; break;
case 6:cout << "及格水平" << endl; break;
default:cout << "不及格" << endl; break;
}
}
else cout << "请输入0-100的分数" << endl;
}
system("pause");
return 0;
}
