C++ 使用 Switch 语句实现百分制成绩到英文等级转换

#include <iostream>
using namespace std;

int main() {
    int score;
    cout << "请输入成绩（百分制）：";
    cin >> score;

    switch(score/10) {
        case 10:
        case 9:
            cout << 'A' << "级" << endl;
            break;
        case 8:
            cout << 'B' << "级" << endl;
            break;
        case 7:
            cout << 'C' << "级" << endl;
            break;
        case 6:
            cout << 'D' << "级" << endl;
            break;
        default:
            cout << 'E' << "级" << endl;
            break;
    }

    return 0;
}