2004

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     int grade;
 6     while(scanf("%d",&grade) != EOF)
 7     {
 8         switch(grade /10)
 9         {
10             case 9:
11             case 10:
12                 printf("%c\n",‘A‘);break;
13             case 8:
14                 printf("%c\n",‘B‘);break;
15             case 7:
16                 printf("%c\n",‘C‘);break;
17             case 6:
18                 printf("%c\n",‘D‘);break;
19             case 5:
20             case 4:
21             case 3:
22             case 2:
23             case 1:
24             case 0:
25                 printf("%c\n",‘E‘);break;
26             default:
27                 printf("Score is error!\n");
28         }
29     }
30     return 0;
31 }

#include <math.h>
#include <stdio.h>

int main(void)
{
    int r;

    while (scanf("%d", &r) != EOF)
    {
        if (r < 0)
            puts("Score is error!");
        else if (r < 60)
            puts("E");
        else if (r < 70)
            puts("D");
        else if (r < 80)
            puts("C");
        else if (r < 90)
            puts("B");
        else if (r < 101)
            puts("A");
        else
            puts("Score is error!");
    }

    return 0;
}