成绩的等级 题解:
# include <bits/stdc++.h>
using namespace std;
int main(){
int score;
cin >> score;
if (score >= 90)
cout << "A";
else if (score >= 80)
cout << "B";
else if (score >= 70)
cout << "C";
else if (score >= 60)
cout << "D";
else
cout << "E";
return 0;
}
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