```
代码我改了一下,应该可以的
float k;
int n, i; int a[100]; float cn, c;
while (scanf("%d", &n) != EOF)
{
k = 0; cn = 0; c = 0;
for (i = 0; i<n;i++)
{
scanf("%d",&a[i]);
}
for (i = 0; i < n; i++)
{
if (a[i] < 60)
cn++;
}
k = cn / n;
c = k * 100;
printf("%.2f%%\n", c);
}