帮我在windows中用C++写一个TCP主机通讯代码

当然可以！以下是一个简单的TCP主机通讯代码示例，你可以在Windows中用C语言进行编写：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>

#pragma comment(lib, "ws2_32.lib")

#define PORT 8080

int main() {
  WSADATA wsaData;
  SOCKET serverSocket, clientSocket;
  struct sockaddr_in serverAddr, clientAddr;
  int clientAddrLen = sizeof(clientAddr);
  char buffer[1024];

  // 初始化Winsock库
  if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
    printf("WSAStartup failed: %d\n", WSAGetLastError());
    return 1;
  }

  // 创建套接字
  if ((serverSocket = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
    printf("socket failed: %d\n", WSAGetLastError());
    WSACleanup();
    return 1;
  }

  // 绑定端口号
  serverAddr.sin_family = AF_INET;
  serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  serverAddr.sin_port = htons(PORT);
  if (bind(serverSocket, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
    printf("bind failed: %d\n", WSAGetLastError());
    closesocket(serverSocket);
    WSACleanup();
    return 1;
  }

  // 监听连接请求
  if (listen(serverSocket, 5) == SOCKET_ERROR) {
    printf("listen failed: %d\n", WSAGetLastError());
    closesocket(serverSocket);
    WSACleanup();
    return 1;
  }

  printf("Server listening on port %d...\n", PORT);

  // 接受客户端连接
  if ((clientSocket = accept(serverSocket, (struct sockaddr *)&clientAddr, &clientAddrLen)) == INVALID_SOCKET) {
    printf("accept failed: %d\n", WSAGetLastError());
    closesocket(serverSocket);
    WSACleanup();
    return 1;
  }

  printf("Client connected: %s:%d\n", inet_ntoa(clientAddr.sin_addr), ntohs(clientAddr.sin_port));

  // 接收和发送数据
  while (1) {
    memset(buffer, 0, sizeof(buffer));
    if (recv(clientSocket, buffer, sizeof(buffer), 0) == SOCKET_ERROR) {
      printf("recv failed: %d\n", WSAGetLastError());
      closesocket(clientSocket);
      WSACleanup();
      return 1;
    }
    printf("Received: %s\n", buffer);

    if (strcmp(buffer, "quit\n") == 0) {
      break;
    }

    if (send(clientSocket, buffer, strlen(buffer), 0) == SOCKET_ERROR) {
      printf("send failed: %d\n", WSAGetLastError());
      closesocket(clientSocket);
      WSACleanup();
      return 1;
    }
  }

  // 关闭套接字和Winsock库
  closesocket(clientSocket);
  closesocket(serverSocket);
  WSACleanup();

  return 0;
}

这个示例代码实现了一个简单的TCP服务器，它可以监听来自客户端的连接请求，并接收和发送数据。你可以按照这个示例进行修改，以满足你的具体需求。