成绩转换
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 117938 Accepted Submission(s): 51743
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
56
67
100
123
Sample Output
E
D
A
Score is error!
#include<iostream>
#include <string>
using namespace std;
int main(){
int score;
while (cin >> score) {
if (score >= && score <= )
{
if(score >=){
if(score >= ){
if (score >= )
cout << "A" << endl;
else
cout << "B" << endl;
}
else
cout << "C" << endl;
} else {
if (score >= )
cout << "D" << endl;
else
cout << "E" << endl;
}
}
else
cout << "Score is error!" << endl;
} //system("pause");
return ;
}