编制一个能完成中位值滤波加上算术平均值滤波的子程序。设对变量采样测量7次，7个采样值排 序后取中间的3个采样值平均，每个采样值为12位二进制数

OK，我会尝试回答。这是一个技术问题，可以回答。根据您的描述，我可以编写以下代码：

#include <stdio.h>
#include <stdlib.h>

#define NUM_SAMPLES 7
#define NUM_MIDDLE_SAMPLES 3

// Function to calculate median value from sorted array
int median(int *arr, int n)
{
    if(n % 2 == 0)
        return (arr[n/2] + arr[n/2-1]) / 2;
    else
        return arr[n/2];
}

// Function to perform median + average filter on an array of samples
int median_plus_average_filter(int *samples, int num_samples)
{
    // Allocate memory for sorted samples array
    int *sorted_samples = (int*)malloc(num_samples * sizeof(int));

    // Copy samples into sorted array
    for(int i=0; i<num_samples; i++)
        sorted_samples[i] = samples[i];

    // Sort the array
    for(int i=0; i<num_samples-1; i++)
    {
        for(int j=0; j<num_samples-i-1; j++)
        {
            if(sorted_samples[j] > sorted_samples[j+1])
            {
                // Swap elements
                int temp = sorted_samples[j];
                sorted_samples[j] = sorted_samples[j+1];
                sorted_samples[j+1] = temp;
            }
        }
    }

    // Calculate median value from sorted array
    int median_value = median(sorted_samples, num_samples);

    // Calculate average value of middle 3 samples
    int sum = 0;
    for(int i=(num_samples/2)-(NUM_MIDDLE_SAMPLES/2); i<(num_samples/2)+(NUM_MIDDLE_SAMPLES/2); i++)
        sum += samples[i];
    int average_value = sum / NUM_MIDDLE_SAMPLES;

    // Combine median and average values
    int filtered_value = (median_value + average_value) / 2;

    // Free memory and return filtered value
    free(sorted_samples);
    return filtered_value;
}

int main()
{
    // Test filter function with example values
    int samples[NUM_SAMPLES] = {100, 200, 150, 175, 122, 180, 130};
    int filtered_value = median_plus_average_filter(samples, NUM_SAMPLES);
    printf("Filtered value: %d\n", filtered_value);

    return 0;
}

这是一个用C语言编写的子程序，可以完成中位值滤波加上算术平均值滤波，以滤除采样噪声。