c语言dns解析代码

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

int main(int argc, char *argv[]) {
    char hostname[] = "www.example.com";  // 要解析的域名
    struct hostent *host;

    // 调用gethostbyname函数进行域名解析
    host = gethostbyname(hostname);
    if (host == NULL) {
        fprintf(stderr, "Error: Cannot resolve hostname.\n");
        return 1;
    }

    // 输出解析结果
    printf("Hostname: %s\n", host->h_name);

    // 输出解析后的IP地址列表
    int i = 0;
    while (host->h_addr_list[i] != NULL) {
        struct in_addr addr;
        memcpy(&addr, host->h_addr_list[i], sizeof(struct in_addr));
        printf("IP Address: %s\n", inet_ntoa(addr));
        i++;
    }

    return 0;
}