基于tcp协议的简易聊天机器人使用C语言

好的，下面我将给出一个基于TCP协议的简易聊天机器人C语言示例代码，希望能帮到您：

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

#define PORT 8888
#define MAX_MSG_SIZE 1024

int main()
{
    int server_fd, new_socket, valread;
    struct sockaddr_in address;
    int opt = 1;
    int addrlen = sizeof(address);
    char buffer[MAX_MSG_SIZE] = {0};
    char *hello = "Hello from server";
    
    // 创建TCP套接字
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
    {
        perror("socket failed");
        exit(EXIT_FAILURE);
    }

    // 设置套接字选项
    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)))
    {
        perror("setsockopt");
        exit(EXIT_FAILURE);
    }

    // 初始化服务器地址
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(PORT);

    // 绑定地址和端口
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0)
    {
        perror("bind failed");
        exit(EXIT_FAILURE);
    }

    // 监听连接
    if (listen(server_fd, 3) < 0)
    {
        perror("listen");
        exit(EXIT_FAILURE);
    }

    // 等待连接
    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0)
    {
        perror("accept");
        exit(EXIT_FAILURE);
    }

    // 向客户端发送欢迎消息
    send(new_socket, hello, strlen(hello), 0 );
    printf("Hello message sent\n");

    // 循环等待客户端发送消息
    while (1)
    {
        memset(buffer, 0, MAX_MSG_SIZE);
        valread = read(new_socket, buffer, MAX_MSG_SIZE);
        printf("Client: %s", buffer);

        // 根据客户端发送的消息，给出回复
        if (strcmp(buffer, "Hello\n") == 0)
        {
            printf("Server: Hi there!\n");
            send(new_socket, "Hi there!", strlen("Hi there!"), 0);
        }
        else if (strcmp(buffer, "How are you?\n") == 0)
        {
            printf("Server: I'm fine, thank you!\n");
            send(new_socket, "I'm fine, thank you!", strlen("I'm fine, thank you!"), 0);
        }
        else if (strcmp(buffer, "Quit\n") == 0)
        {
            printf("Server: Goodbye!\n");
            send(new_socket, "Goodbye!", strlen("Goodbye!"), 0);
            break;
        }
        else
        {
            printf("Server: Sorry, I don't understand.\n");
            send(new_socket, "Sorry, I don't understand.", strlen("Sorry, I don't understand."), 0);
        }
    }

    // 关闭套接字
    close(new_socket);
    close(server_fd);
    return 0;
}

这个示例代码创建了一个TCP服务器程序，等待客户端连接，并根据预先设定好的回复规则，与客户端进行交互。当收到客户端发送的消息后，服务器会根据预先设定好的回复规则，给客户端发送回复。当客户端发送“Quit”消息时，服务器会关闭连接。在实际应用中，可以根据需要修改回复规则和相关参数。