windows环境下#include <stdio.h> #include <stdlib.h> #include <string.h> #include<windows.h> #include <WinSock2.h> #define PORT 8888 int main(int argc, char const *argv[]) { int sock = 0, valread; struct sockaddr_in serv_addr; char buffer[1024] = {0}; char filename[100] = {0}; FILE *fp; // 创建 socket 文件描述符 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) { printf("\n Socket creation error \n"); return -1; } // 初始化地址结构体 memset(&serv_addr, '0', sizeof(serv_addr)); serv_addr.sin_family = AF_INET; serv_addr.sin_port = htons(PORT); // 将 IP 地址从字符串转换为二进制格式 if (inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr) <= 0) { printf("\n Invalid address/ Address not supported \n"); return -1; } // 连接服务器 if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) { printf("\n Connection Failed \n"); return -1; } // 发送文件名 printf("Enter filename: "); scanf("%s", filename); send(sock, filename, strlen(filename), 0); // 打开文件 fp = fopen(filename, "rb"); if (fp == NULL) { perror("fopen failed"); exit(EXIT_FAILURE); } // 发送文件内容 while (!feof(fp)) { valread = fread(buffer, sizeof(char), sizeof(buffer), fp); send(sock, buffer, valread, 0); memset(buffer, 0, sizeof(buffer)); } // 关闭文件和 socket fclose(fp); close(sock); return 0;}该怎么写

这是一个基于 Socket 实现文件传输的客户端程序，需要连接到一个运行在本地的服务器。以下是完整代码：

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

#define PORT 8888

int main(int argc, char const *argv[])
{
    WSADATA wsa;
    SOCKET sock = INVALID_SOCKET;
    struct sockaddr_in serv_addr;
    char buffer[1024] = {0};
    char filename[100] = {0};
    FILE *fp;
    int valread;

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

    // 创建 socket 文件描述符
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
    {
        printf("Socket creation error. Error Code : %d\n", WSAGetLastError());
        return -1;
    }

    // 初始化地址结构体
    memset(&serv_addr, '0', sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(PORT);

    // 将 IP 地址从字符串转换为二进制格式
    if (inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr) <= 0)
    {
        printf("Invalid address/ Address not supported.\n");
        return -1;
    }

    // 连接服务器
    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
    {
        printf("Connection failed.\n");
        return -1;
    }

    // 发送文件名
    printf("Enter filename: ");
    scanf("%s", filename);
    send(sock, filename, strlen(filename), 0);

    // 打开文件
    fp = fopen(filename, "rb");
    if (fp == NULL)
    {
        perror("fopen failed");
        exit(EXIT_FAILURE);
    }

    // 发送文件内容
    while (!feof(fp))
    {
        valread = fread(buffer, sizeof(char), sizeof(buffer), fp);
        send(sock, buffer, valread, 0);
        memset(buffer, 0, sizeof(buffer));
    }

    // 关闭文件和 socket
    fclose(fp);
    closesocket(sock);

    // 清理 Winsock 库
    WSACleanup();

    return 0;
}

需要注意的是，在 Windows 环境下使用 Socket 编程需要先调用 `WSAStartup()` 函数来初始化 Winsock 库，并在程序结束时调用 `WSACleanup()` 函数来清理 Winsock 库。此外，Windows 下使用的是 `closesocket()` 函数来关闭 socket，而不是 `close()` 函数。