#include <arpa/inet.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int check_ipaddr (char *str)
{
if (str == NULL || *str == '\0')
return 1;
struct sockaddr_in6 addr6;
struct sockaddr_in addr4;
if (1 == inet_pton (AF_INET, str, &addr4.sin_addr))
return 0;
else if (1 == inet_pton (AF_INET6, str, &addr6.sin6_addr))
return 0;
return 1;
}
int main(int argc, char *argv[])
{
if(argc <2 ){
printf("useage: %s $ip\n", argv[0]);
exit(1);
}
if((check_ipaddr(argv[1]) == 0)){
printf("%s is ipaddr\n", argv[1]);
}else{
printf("%s is not ipaddr \n", argv[1]);
}
}
参考链接
http://blog.csdn.net/realmardrid/article/details/64444039