此解可AC （C语言代码）

解题思路:

注意事项:

参考代码:

#include<stdio.h>

int main()

{

float grade;

int a = 0, b = 0, c = 0;

while (scanf("%f", &grade))

{

if (grade <= 0)

break;

if (grade >= 85)

a++;

else if (grade < 60)

c++;

else

b++;

}

printf(">=85:%d\n", a);

printf("60-84:%d\n", b);

printf("<60:%d", c);

return 0;

}