请用C语言写模糊控制算法

模糊控制算法的实现需要使用模糊逻辑进行计算，以下是一个简单的模糊控制算法的C语言实现示例：

#include <stdio.h>

//模糊逻辑函数
float fuzzy_logic(float x, float a, float b, float c) {
    if (x < a || x > c) {
        return 0;
    } else if (x >= a && x < b) {
        return (x - a) / (b - a);
    } else if (x >= b && x <= c) {
        return (c - x) / (c - b);
    }
}

int main() {
    float distance, speed;
    float distance_near = 0, distance_medium = 10, distance_far = 20;
    float speed_slow = 0, speed_medium = 50, speed_fast = 100;
    float fuzzy_slow = 0, fuzzy_medium = 0, fuzzy_fast = 0;
    float fuzzy_output;

    printf("请输入距离：");
    scanf("%f", &distance);
    printf("请输入速度：");
    scanf("%f", &speed);

    //模糊化
    fuzzy_slow = fuzzy_logic(distance, distance_near, distance_medium, distance_far);
    fuzzy_medium = fuzzy_logic(distance, distance_near, (distance_near + distance_far) / 2, distance_far);
    fuzzy_fast = fuzzy_logic(distance, distance_near, distance_far, distance_far);

    //模糊规则
    if (fuzzy_slow > 0 && speed < speed_slow) {
        fuzzy_output = fuzzy_slow;
    } else if (fuzzy_medium > 0 && (speed >= speed_slow && speed <= speed_fast)) {
        fuzzy_output = fuzzy_medium;
    } else if (fuzzy_fast > 0 && speed > speed_fast) {
        fuzzy_output = fuzzy_fast;
    }

    //去模糊化
    float output_speed = (fuzzy_slow * speed_slow + fuzzy_medium * speed_medium + fuzzy_fast * speed_fast) /
                         (fuzzy_slow + fuzzy_medium + fuzzy_fast);

    printf("输出速度：%f\n", output_speed);

    return 0;
}

该示例实现了一个简单的模糊控制算法，根据输入的距离和速度，进行模糊化处理，然后根据设定的模糊规则进行计算，最后进行去模糊化处理，输出模糊控制算法的结果。