用C语言实现快速交织操作？

#include <stdio.h>
#include <pthread.h>

#define NUM_THREADS 5

void* threadFunc(void* arg) {
    int threadId = *(int*)arg;
    printf("Thread %d is running\n", threadId);
    // 执行任务
    // ...

    printf("Thread %d is done\n", threadId);
    pthread_exit(NULL);
}

int main() {
    pthread_t threads[NUM_THREADS];
    int threadIds[NUM_THREADS];

    // 创建多个线程
    for (int i = 0; i < NUM_THREADS; ++i) {
        threadIds[i] = i;
        pthread_create(&threads[i], NULL, threadFunc, &threadIds[i]);
    }

    // 等待所有线程结束
    for (int i = 0; i < NUM_THREADS; ++i) {
        pthread_join(threads[i], NULL);
    }

    printf("All threads are done\n");

    return 0;
}