#include
using namespace std;
int main()
{
int fen;
cout<<"输入0-100之间的分数"<
switch(fen/10)
{
case 10:
case 9:
cout << "A"<< endl;break;
case 8:
cout << "B"<< endl;break;
case 7:
cout << "C"<< endl;break;
case 6:
cout << "D"<< endl;break;
case 5:case 4: case 3: case 2: case 1: case 0:
cout << "E"<< endl;break;
default:
cout << "不在0-100之间" << endl;
}
return 0;
}