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 > 0 && score <=59)
    {
        cout << "差";
    }
    else if(score >=60 && score <=69)
    {
        cout << "及格";
    }
    else if(score >=70 && score <= 79)
    {
        cout << "中";
    }
    else if(score >= 80 && score <= 89)
    {
        cout << "良";
    }
    else if(score >=90 && score <= 100)
    {
        cout << "优秀";
    }
    else {
        cout << "成绩不合法";
    }

    return 0;
}