2234 - 成绩转换
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!”。
Examples
Input
56 67 100 123
Output
E D A Score is error!
Solution C
#include<stdio.h> int main() { double fraction; while ( scanf ( "%lf", &fraction ) != EOF ) { if(fraction<=59&&fraction>=0) printf("E\n"); else if(fraction<=69&&fraction>=60) printf("D\n"); else if(fraction<=79&&fraction>=70) printf("C\n"); else if(fraction<=89&&fraction>=80) printf("B\n"); else if(fraction<=100&&fraction>=90) printf("A\n"); else printf("Score is error!\n"); } return 0; }
Solution C++
#include<bits/stdc++.h> using namespace std; int a; int main() { while(cin>>a) { switch(a) { case 90 ...100:cout<<"A"<<endl;break; case 80 ...89:cout<<"B"<<endl;break; case 70 ...79:cout<<"C"<<endl;break; case 60 ...69:cout<<"D"<<endl;break; case 0 ...59:cout<<"E"<<endl;break; default:cout<<"Score is error!"<<endl; } } return 0; }