C语言温度输出代码哪里写错了

#include <stdio.h>

int main(void)
{
    const int FREEZING = 0;
    float temperature;
    int cold_days = 0;
    int all_days = 0;

    printf("请输入每日低温的数据，使用摄氏度，输入回车后停止。\n");
    while (scanf("%f", &temperature) == 1)
    {
        all_days++;
        if (temperature < FREEZING)
            cold_days++;
    }

    if (all_days != 0)
        printf("总共有%d天，其中%.1f%%低于冰点。\n", all_days, 100.0 * (float)cold_days / all_days);
    else
        printf("没有输入任何数据。\n");

    return 0;
}