成绩转换

#include<iostream>using namespace std;int main(){int num;cin>>num;while(num--){int score;cin>>score;switch(score/10){case 10:case 9:cout<<'A';break;case 8:cout<<'B';break;case 7:cout<<'C';break;case 6:cout<<'D';break;default:cout<<'E';break;}cout<<endl;}}