题解 | #判断成绩等级#

#include <iostream>
using namespace std;

int main() {
    
    int score;
    cin >> score;
    if(score>100) cout<<"成绩不合法"<<endl;
    else if(score>=90) cout<<"优秀"<<endl;
    else if(score>=80) cout<<"良"<<endl;
    else if(score>=70) cout<<"中"<<endl;
    else if(score>=60) cout<<"及格"<<endl;
    else if(score<0) cout<<"成绩不合法"<<endl;
    else if(score<=59) cout<<"差"<<endl;

    return 0;
}