stl list에서 문자열 검색 관련 질문입니다.

typedef struct _DBUserInfo
{
	char dbUserName[25];
	char dbUserPassword[25];
	char dbName[25];
}DBUserInfo;

// 유저 정보 생성
void makeDBuserInfo()
{
 
	DBUserInfo dbInfo[3];
	strcpy(dbInfo[0].dbUserName,"scott");
	strcpy(dbInfo[0].dbUserPassword, "tiger");
	strcpy(dbInfo[0].dbName, "sqlplus");
 
	strcpy(dbInfo[1].dbUserName,"scott2");
	strcpy(dbInfo[1].dbUserPassword,"tiger2");
	strcpy(dbInfo[1].dbName, "sqlplus");
 
	strcpy(dbInfo[2].dbUserName, "scott3");
	strcpy(dbInfo[2].dbUserPassword, "tiger3");
	strcpy(dbInfo[2].dbName, "sqlplus");
 
	DBUserList.push_back(dbInfo[0]);
	DBUserList.push_back(dbInfo[1]);
	DBUserList.push_back(dbInfo[2]);
 
}
유저에 대한 정보를 리스트에 집어 넣고 

list<DBUserInfo>::iterator iter;
	int retValue = 0;
 
	for(iter = DBUserList.begin(); iter != DBUserList.end(); ++iter)
	{
		retValue = 0;
		retValue += strcmp(iter->dbUserName, (char *)loginReqMsg.db_user);
		retValue += strcmp(iter->dbUserPassword, (char *)loginReqMsg.password);
		retValue += strcmp(iter->dbName, (char *)loginReqMsg.db_name);
 
			cout << "retValue = " << retValue << endl;
	}