c++ regex用法实例 2

c++ regex用法实例

目的

,承接用法实例1，此次目的是可以发现ip地址和域名地址是否基本合法

code

#include 
#include 
#include 
using namespace std;

#define GETN(x) sizeof(x)/sizeof(char*)
int main()
{
	regex Pattern_ip("((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])");
	regex Pattern_domain("([0-9A-Za-z\\-_\\.]+)\\.([0-9a-z]+\\.[a-z]{2,3}(\\.[a-z]{2})?)");

	const char *ips[] = { "192.168.20.250","1.1.1.1","abc" };
	const char *domain[] = { "192.168.20.250","1.1.1.1","www.baidu.com.cn" };
	
	int n = GETN(ips) ;
	for (int i = 0; i