题解 | #判断成绩等级#

#include <iostream>
using namespace std;

int main() {

    int score;
    cin >> score;

    // write your code here......
    if (score >= 90 && score <= 100)cout << "优秀" << endl;
    else if (score >= 80 && score <= 89 )cout << "良" << endl;
    else if (score >= 70 && score <= 79 )cout << "中" << endl;
    else if (score >= 60 && score <= 69 )cout << "及格" << endl;
    else if (score >= 0 && score <= 59 )cout << "差" << endl;
    else cout << "成绩不合法" << endl;

    return 0;
}