#include
#include
int main()
{
int score,level;
printf("請輸入分數：");
scanf("%d", &score);
level = (int) score/10;
switch(level)
{
case 9:
puts("成績：A");
break;
case 8:
puts("成績：B");
break;
ase 7:
puts("成績：C");
break;
case 6:
puts("成績：D");
break;
default:
printf("選項錯誤\n");
}
system("pause");
return 0;
}