在Linux下用C获取电脑可用wifi的代码

很高兴为您服务！这里有一些代码示例，可以帮助您在Linux下用C获取电脑可用wifi：1）使用libnl库：#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>int main(int argc, char *argv[])
{
struct nl_sock *sock;
int err;
struct nl_cb *cb;
int if_index;
struct nl_msg *msg; if_index = if_nametoindex("wlan0");
if (if_index < 0) {
fprintf(stderr, "Failed to get interface index\n");
return 1;
} sock = nl_socket_alloc();
if (!sock) {
fprintf(stderr, "Failed to allocate netlink socket\n");
return 1;
} err = genl_connect(sock);
if (err < 0) {
fprintf(stderr, "Failed to connect to generic netlink\n");
nl_socket_free(sock);
return 1;
} cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!cb) {
fprintf(stderr, "Failed to allocate netlink callback\n");
nl_socket_free(sock);
return 1;
} msg = nlmsg_alloc();
if (!msg) {
fprintf(stderr, "Failed to allocate netlink message\n");
nl_socket_free(sock);
nl_cb_put(cb);
return 1;
} genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, genl_ctrl_resolve(sock, "nl80211"), 0, NLM_F_DUMP, NL80211_CMD_GET_SCAN, 0);
nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_index); err = nl_send_auto_complete(sock, msg);
if (err < 0) {
fprintf(stderr, "Failed to send netlink message\n");
nl_socket_free(sock);
nl_cb_put(cb);
nlmsg_free(msg);
return 1;
} err = nl_recvmsgs(sock, cb);
if (err < 0) {
fprintf(stderr, "Failed to receive netlink message\n");
nl_socket_free(sock);
nl_cb_put(cb);
nlmsg_free(msg);
return 1;
} nl_socket_free(sock);
nl_cb_put(cb);
nlmsg_free(msg); return 0;
}