HDU 2004 成绩转换

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int r;
 5     while(scanf("%d",&r)!=EOF)
 6     {
 7         if(r<0)
 8          puts("Score is error!");
 9         else if(r<60)
10          puts("E");
11         else if(r<70)
12          puts("D");
13         else if(r<80)
14          puts("C");
15         else if(r<90)
16          puts("B");
17         else if(r<101)
18          puts("A");
19         else 
20          puts("Score is error!");
21      }
22      return 0;
23 }