#include <iostream>#include <string>#include <fstream>using namespace std;void Str2Lower(string& str, int nLen);int main(int argc, char* argv[]){	const char *home_host[] ={                "cn","com","net","org","info",                "biz","tv","cc"                //"hk","tw"        };	int home_host_num = 8;	char *f_sContentName = "tse_unreachHost.list";	ifstream ifsContentFile(f_sContentName);	if (!ifsContentFile ){		cout << "Cannot open " << f_sContentName << " for input" << endl;		exit(-1);	}	string line;	while (getline(ifsContentFile,line)){		string::size_type idx = line.rfind('.');		string tmp;		if( idx != string::npos ){			tmp = line.substr(idx+1);		}		Str2Lower( tmp, tmp.size() );		for(int i=0; i<home_host_num; i++){                	if( tmp == home_host[i] )                        	cout << line << endl;;		}        }	exit(0);}void Str2Lower(string& str, int nLen){        char distance='A'-'a' ;                                                                                        for( int i=0 ; i<nLen; i++ )                if  ( str[i]>='A' && str[i]<='Z' )                        str[i] -= distance ;}