题解 | #判断成绩等级#

#include <iostream>
using namespace std;

int main() {

    int score;
    int i;
    cin >> score;

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

    
    }

    return 0;
}