杭电ACM2004

Problem Description

输入一个百分制的成绩t，将其转换成对应的等级，具体转换规则如下：
90~100为A;
80~89为B;
70~79为C;
60~69为D;
0~59为E;

 

Input

输入数据有多组，每组占一行，由一个整数组成。

 

Output

对于每组输入数据，输出一行。如果输入数据不在0~100范围内，请输出一行：“Score is error!”。

 

Sample Input

5667100123

 

Sample Output

EDAScore is error!

 

#include<iostream> #include<cmath>using namespace std;int main(){double score;while (cin>>score){if (score > 100 || score < 0)cout << "Score is error!" << endl;else{int f = score / 10;switch (f){case 10:cout << "A" << endl;break;case 9:cout << "A" << endl;break;case 8:cout << "B" << endl;break;case 7:cout << "C" << endl;break;case 6:cout << "D" << endl;break;default:cout << "E" << endl;break;}}}/*int score;while (cin>>score){if (score >= 90 && score <= 100)cout << "A" << endl;else if (score >= 80 && score <90)cout << "B" << endl;else if (score >= 70 && score <80)cout << "C" << endl;else if (score >= 60 && score <70)cout << "D" << endl;else if (score >= 0 && score < 60)cout << "E" << endl;elsecout << "Score is error!" << endl;}*/return 0;}