linux聊天室程序代码c语言代码 约600行

编写一个完整的Linux聊天室程序大约需要几百行代码，这取决于是否使用了库如socket、pthread或多线程等。下面是一个简单的示例，展示了一个基于C语言的基本TCP聊天室服务器和客户端的概念，但这只是一个基础框架，并非完整实现。

**服务器端（server.c）**

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

#define MAX_CLIENTS 5
#define BUFFER_SIZE 1024

int main(int argc, char *argv[]) {
    int server_fd, client_sock, c;
    struct sockaddr_in server_addr, client_addr;
    socklen_t addr_len = sizeof(client_addr);
    pthread_t client_thread[MAX_CLIENTS];

    if (argc != 2) {
        printf("Usage: %s <port>\n", argv);
        return -1;
    }

    // 创建服务器套接字
    server_fd = socket(AF_INET, SOCK_STREAM, 0);
    if (server_fd == -1) {
        perror("Error creating socket");
        exit(EXIT_FAILURE);
    }

    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(atoi(argv));
    server_addr.sin_addr.s_addr = INADDR_ANY;

    if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
        perror("Error binding socket");
        close(server_fd);
        exit(EXIT_FAILURE);
    }

    listen(server_fd, MAX_CLIENTS);

    while (1) {
        printf("Waiting for clients...\n");

        // 接受连接
        if ((client_sock = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) < 0) {
            perror("Error accepting connection");
            continue;
        }

        // 启动新的线程处理每个客户端
        pthread_create(&client_thread[c], NULL, handle_client, (void *)client_sock);
        c++;
    }

    return 0;
}

// 客户端处理函数
void* handle_client(void* client_sock_ptr) {
    int client_sock = *(int*)client_sock_ptr;
    char buffer[BUFFER_SIZE];
    while (1) {
        read(client_sock, buffer, BUFFER_SIZE - 1);
        buffer[BUFFER_SIZE - 1] = '\0';
        printf("Received message from client: %s\n", buffer);
        send(client_sock, "Server received!", strlen("Server received!"), 0);
        if (strcmp(buffer, "exit") == 0) break;
    }
    close(client_sock);
    return NULL;
}

**客户端（client.c）**

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

int main(int argc, char *argv[]) {
    if (argc != 3) {
        printf("Usage: %s <hostname> <port>\n", argv);
        return -1;
    }

    int client_sock;
    struct sockaddr_in server_addr;
    char message[BUFFER_SIZE];

    client_sock = socket(AF_INET, SOCK_STREAM, 0);
    if (client_sock == -1) {
        perror("Error creating socket");
        exit(EXIT_FAILURE);
    }

    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(atoi(argv));
    inet_pton(AF_INET, argv, &server_addr.sin_addr);

    if (connect(client_sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
        perror("Error connecting to server");
        close(client_sock);
        exit(EXIT_FAILURE);
    }

    while (1) {
        printf("Enter your message or 'exit' to quit: ");
        fgets(message, BUFFER_SIZE, stdin);
        message[strcspn(message, "\n")] = '\0';

        if (strcmp(message, "exit") == 0) break;
        write(client_sock, message, strlen(message));
    }

    close(client_sock);
    return 0;
}

要运行这个简单的聊天室程序，首先编译服务器端（`gcc server.c -o server`），然后启动服务器并等待客户端连接。接着编译客户端（`gcc client.c -o client`），并连接到服务器。

请注意，这只是一个基本示例，实际应用中可能需要考虑更多的错误处理、用户认证、数据持久化等。