题解 | #判断成绩等级#

#include <iostream>
using namespace std;

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

    return 0;
}