int main()
{
float ave
printf("\n 输入成绩:");------------------------出错
scanf("%f%f",&ave);------------------------出错
switch(ave/10)
{
case'10,9':
printf("等级A\n");break;
case'8':
printf("等级B\n");break;
case'7':
printf("等级C\n");break;
case'6':
printf("等级D\n");break;
case'5,4,3,2,1,0':
printf("等级E\n");
}
}
getch();
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