求一C语言大神在线帮我写一段程序‘’请编写程序实现根据主机名获得IP地址信息,并将信息保存在文件中‘’

#include <stdio.h>

#include <string.h>

#include <malloc.h>

#include <arpa/inet.h>

#include <netinet/in.h>

#include <netdb.h>

using namespace std

const char* dns_parse(const char* host) {

struct addrinfo hints

struct addrinfo *result = NULL

struct addrinfo *rp = NULL

memset(&hints, 0, sizeof(struct addrinfo))

hints.ai_family = AF_UNSPEC /* Allow any */

hints.ai_socktype = 0 /* Any */

hints.ai_flags = 0/* No flags */

hints.ai_protocol = 0 /* Any protocol */

int error = getaddrinfo(host, NULL, &hints, &result)

if (error != 0) {

if (result) {

freeaddrinfo(result)

}

return ""

}

const char* ip = ""

const char* ipv6 = ""

const char* ipv4 = ""

char tmp[INET6_ADDRSTRLEN * 2] = {0}

for (rp = resultrp != NULLrp = rp->ai_next) {

if (rp->ai_family == AF_INET &&strlen(ipv4) == 0) {

const char *ret = inet_ntop(rp->ai_family,

&((struct sockaddr_in*)rp->ai_addr)->sin_addr,

tmp, (INET6_ADDRSTRLEN * 2))

if (ret != NULL) {

ipv4 = ret

}

} else if (rp->ai_family == AF_INET6 &&strlen(ipv6) == 0) {

const char *ret = inet_ntop(rp->ai_family,

&((struct sockaddr_in6*)rp->ai_addr)->sin6_addr,

tmp, (INET6_ADDRSTRLEN * 2))

if (ret != NULL) {

ipv6 = ret

}

}

}

if (result) {

freeaddrinfo(result) // Not needed anymore

}

if (strlen(ipv6) >0) {

ip = ipv6

} else if (strlen(ipv4) >0) {

ip = ipv4

} else {

return ""

}

return ip

}

void save_to_file(char* data, int len, const char* file_path) {

FILE *fp = fopen(file_path, "wb")

if (!fp) {

return

}

fwrite(data, sizeof(char), len, fp)

fclose(fp)

}

int main() {

const char* ip = dns_parse("www.baidu.com")

printf("%s\n", ip)

int len = strlen(ip)

char* data = (char*)malloc(len + 1)

memcpy(data, ip, len)

data[len] = '\0'

save_to_file(data, len + 1, "a.txt")

free(data)

return 0

}

和命令没有什么关系。主要是要安装webserver。

然后解析域名到IP，再到主机上绑定这个域名就可以了

建议使用护卫神主机大师，一键安装 webserver，在线绑定域名。非常简单方便。

1、知道对方计算机名查看对方ip

方法：开始->运行->cmd->ping 对方计算机名

或者 开始->运行->cmd->nbtstat -a 对方计算机名

2、知道对方ip查看对方的计算机名

方法：开始->运行->cmd->net view 对方ip

或者 开始->运行->cmd->nbtstat -a 对方ip

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