代码：

#include<iostream>
using namespace std;
int main()
{
	string scoreGrade;//表示成绩分级
	int score;
	cout << "请输入您的成绩" << endl;
	while (cin >> score && score >= 0 && score <= 100)
	{
		scoreGrade =
			(score > 90) ? "high pass"
			: (score > 75) ? "pass"
			: (score >= 60) ? "lower pass" : "fail";
		//这里使用的是条件运算符
		cout << "您输入的成绩属于：" << scoreGrade << endl;
		cout << "请输入您的成绩：" << endl;
	}
	return 0;
}

 

 

2021/6/17