在c语言中，输入A组学生姓名和身高，输入B组学生姓名和身高，使用二路归并按照学生身高从低到高排序。然后随机插入一名姓名为李四，身高为1.88M的学生，输出最后的排序的完整代码

在C语言中，你可以使用结构体、动态内存分配以及归并排序算法来实现这个功能。这里是一个简单的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <time.h> // 需要包含时间库以实现随机数生成

// 定义学生结构体
typedef struct {
    char name[50];
    float height;
} Student;

void merge(Student *arr, int left, int mid, int right) {
    int i = left, j = mid + 1, k = 0;
    Student temp[right - left + 1];

    while (i <= mid && j <= right) {
        if (arr[i].height <= arr[j].height)
            temp[k++] = arr[i++];
        else
            temp[k++] = arr[j++];
    }

    while (i <= mid)
        temp[k++] = arr[i++];

    while (j <= right)
        temp[k++] = arr[j++];

    for (k = 0; k < right - left + 1; k++)
        arr[left + k] = temp[k];
}

void insertion_sort(Student *arr, int n) {
    for (int i = 1; i < n; i++) {
        Student key = arr[i];
        int j = i - 1;
        while (j >= 0 && arr[j].height > key.height) {
            arr[j + 1] = arr[j];
            j--;
        }
        arr[j + 1] = key;
    }
}

void merge_and_insertion_sort(Student **groups, int group_count, char new_name[], float new_height) {
    // 对每个组分别排序
    for (int i = 0; i < group_count; i++) {
        insertion_sort(groups[i], group_count);
    }

    // 合并两个已排序组
    Student* merged = (Student*)malloc(sizeof(Student)*(group_count*2));
    for (int i = 0; i < group_count; i++) {
        memcpy(merged + i, groups[i], sizeof(Student)*group_count);
    }

    // 插入新学生
    Student* insert_pos = merged + group_count;
    insert_pos->name = new_name;
    insert_pos->height = new_height;

    // 使用归并排序将新学生插入到正确位置
    merge(merged, 0, group_count - 1, group_count);

    // 输出排序后的结果
    for (int i = 0; i < group_count + 1; i++) {
        printf("%s %.2f\n", merged[i].name, merged[i].height);
    }

    free(merged); // 释放内存
}

int main() {
    srand(time(0)); // 初始化随机数种子

    int group_size = 5;
    Student *group_A = (Student*)malloc(group_size * sizeof(Student));
    Student *group_B = (Student*)malloc(group_size * sizeof(Student));

    // 输入A组和B组学生的姓名和身高
    for (int i = 0; i < group_size; i++) {
        printf("Enter A Group student %d details: ", i+1);
        scanf("%s%f", group_A[i].name, &group_A[i].height);
        printf("Enter B Group student %d details: ", i+1);
        scanf("%s%f", group_B[i].name, &group_B[i].height);
    }

    // 随机插入李四
    char new_name[] = "李四";
    float new_height = 1.88; // 单位假设是米

    merge_and_insertion_sort(&group_A, 1, new_name, new_height);
    merge_and_insertion_sort(&group_B, 1, new_name, new_height);

    return 0;
}