C语言程序设计教程（第三版）课后习题5.6 （C语言代码）

参考代码:

#include<stdio.h>

int main()

{

     int s;

     scanf("%d",&s);

     switch(s/10)

     {

         case 9:

         case 10:        //注意:还有100分的可能!

             printf("A");

             break;

         case 8:

             printf("B");

             break;

         case 7:

             printf("C");

             break;

         case 6:

             printf("D");

             break;

         default:

             printf("E");

     }

     return 0;

}