#include #include #include #include using namespace std; int main() { string finalGrade; int grade; cout <<"请输入成绩" << endl; while (cin >> grade && grade >=0 && grade <=100) { finalGrade = (grade >90) ? "high pass": (grade > 75)? "pass": (grade > 60) ? "low pass": "fail"; } cout << "等级为" << finalGrade << endl; // ------------------------- if (grade > 90) cout << "high pass"; else if (grade < 60) cout << "fail"; else if (grade < 75) cout << "low pass"; else cout << "pass"; cout << endl; return 0; }