题解 | #判断成绩等级#

#include <iostream>
using namespace std;

void Grade(int score) {
    if (score >= 90 && score <= 100) {
        cout << "优秀";
    } else if (score >= 80 && score < 90) {
        cout << "良";
    } else if (score >= 70 && score < 80) {
        cout << "中";
    } else if (score >= 60 && score < 70) {
        cout << "及格";
    } else if (score >= 0 && score < 60) {
        cout << "差";
    } else {
        cout << "成绩不合法";
    }
}

int main() {

    int score;
    cin >> score;
    Grade(score);

    return 0;
}