用c语言遍历设置待测服务器的端口号为0000-9999所有的值并存入结构体

以下是一个示例代码，它使用C语言遍历设置待测服务器的端口号为0000-9999所有的值并存入结构体：

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

#define SERVER_ADDR "127.0.0.1"
#define START_PORT 0
#define END_PORT 9999

struct port_info {
    int port;
    int status; // 0: closed, 1: open
};

int main(int argc, char *argv[]) {
    int sockfd, status, i;
    struct sockaddr_in server_addr;
    struct port_info ports[END_PORT - START_PORT + 1];

    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = inet_addr(SERVER_ADDR);

    for (i = START_PORT; i <= END_PORT; i++) {
        sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
        server_addr.sin_port = htons(i);
        status = connect(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr));
        if (status == 0) {
            ports[i - START_PORT].port = i;
            ports[i - START_PORT].status = 1;
        } else {
            ports[i - START_PORT].port = i;
            ports[i - START_PORT].status = 0;
        }
        close(sockfd);
    }

    for (i = 0; i <= END_PORT - START_PORT; i++) {
        printf("Port %d: %s\n", ports[i].port, ports[i].status == 1 ? "open" : "closed");
    }

    return 0;
}

该代码通过循环遍历所有端口号，创建一个套接字并尝试连接到服务器的每个端口。如果连接成功，则将该端口的状态设置为“开放”，否则设置为“关闭”。最后，将所有端口的状态打印到控制台上。