帮我写多人聊天室C++

很高兴为您写多人聊天室的 C 代码。在这里，我将向您展示一个简单的实现方式。

首先，需要使用多线程来实现多人聊天。可以使用 pthread 库来实现线程。

其次，需要使用 socket 来实现网络通信。

下面是一个简单的代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/socket.h>
#include <netinet/in.h>

#define PORT 8888
#define MAX_CLIENTS 10
#define BUFFER_SIZE 1024

int client_socket[MAX_CLIENTS];
pthread_t client_thread[MAX_CLIENTS];

void *handle_client(void *arg) {
    int client_index = *((int *)arg);
    char buffer[BUFFER_SIZE];
    int bytes_received;

    while (1) {
        bytes_received = recv(client_socket[client_index], buffer, BUFFER_SIZE, 0);
        if (bytes_received <= 0) {
            break;
        }

        for (int i = 0; i < MAX_CLIENTS; i++) {
            if (i != client_index && client_socket[i] != 0) {
                send(client_socket[i], buffer, bytes_received, 0);
            }
        }
    }

    printf("Client %d disconnected\n", client_index);
    close(client_socket[client_index]);
    client_socket[client_index] = 0;

    return NULL;
}

int main(int argc, char *argv[]) {
    int server_socket;
    struct sockaddr_in server_address;
    int opt = 1;
    int addrlen = sizeof(server_address);

    for (int i = 0; i < MAX_CLIENTS; i++) {
        client_socket[i] = 0;
    }

    if ((server_socket = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
        perror("socket failed");
        exit(EXIT_FAILURE);
    }

    if (setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
        perror("setsockopt");
        exit(EXIT_FAILURE);
    }

    server_address.sin_family = AF_INET;
    server_address.sin_addr.s_addr = INAD