#include
#include
#include
#include
#include

int main(){
	char *bematch = "hhhericchd@gmail.com";
	char *pattern = "h{3,10}(.*)@(.{5}..*)$";
	char errbuf[1024];
	char match[100];
	regex_t reg;
	int err,nm = 10;
	int len, i;
	regmatch_t pmatch[nm];

	if(regcomp(®,pattern,REG_EXTENDED) < 0){
		regerror(err,&reg,errbuf,sizeof(errbuf));
		printf("err:%sn",errbuf);
	}

	err = regexec(&reg,bematch,nm,pmatch,0);

	if(err == REG_NOMATCH){
	printf("no matchn");
	exit(-1);
	 }else if(err){
		regerror(err,&reg,errbuf,sizeof(errbuf));
		printf("err:%sn",errbuf);
		exit(-1);
	 }

	for(i=0;i<10 && pmatch[i].rm_so!=-1;i++)
	{
		 len = pmatch[i].rm_eo-pmatch[i].rm_so;
		 if(len){
			 memset(match,'',sizeof(match));
				memcpy(match,bematch+pmatch[i].rm_so,len);
				printf("%sn",match);
		}
	 }
	 return 0;
}