#include <map>
#include <string>
#include <iostream>
#include <fstream>

using namespace std;

class Anagram
{
private:
	typedef map< string, map<char, int> >::iterator MSMCII;
	typedef map< char, int > MCI;

	map< string, map<char, int> > _anagramTable;
public:
	void CalWhatAnagram(const string& str)
	{
		MCI howManyEachAlphabet;
		for(int i = 0 ; i < str.size() ; ++i)	
			howManyEachAlphabet[ str[i] ] += 1;		
		_anagramTable[str] = howManyEachAlphabet;
	}
	void Show()
	{
		while( !_anagramTable.empty() )
		{
			MCI value = _anagramTable.begin()->second;

			for(MSMCII i = _anagramTable.begin() ; i != _anagramTable.end() ; )
			{
				if(i->second == value)
				{
					cout << i->first << " ";
					_anagramTable.erase(i++);
				}
				else
				{
					++i;
				}
			}
			cout << endl;
		}
	}
};


int main()
{
	Anagram anagram;

	ifstream fin("input.dat");

	string t;

	while(!fin.eof())
	{
		getline(fin, t);
		anagram.CalWhatAnagram(t);
	}
	anagram.Show();

	fin.close();

	return 0;

~cpp 
#include <map>
#include <string>
#include <vector>
#include <iostream>
#include <fstream>

using namespace std;

class Anagram
{
private:
	typedef map<char, int> MCI;
	typedef vector<string> LS;
	typedef map< MCI, LS > MALS;
	
	typedef MALS::iterator MALSI;
	typedef LS::iterator LSI;

	MALS _anagramTable;

	MCI CalculateWhatAnagram(const string& str)
	{
		MCI howManyEachAlphabet;
		for(int i = 0 ; i < str.size() ; ++i)	
			howManyEachAlphabet[ str[i] ] += 1;		
		return howManyEachAlphabet;
	}
public:
	void BoundAnagram(char* fileName)
	{
		ifstream fin(fileName);
		string str;
		while(!fin.eof())
		{
			getline(fin, str);
			_anagramTable[ CalculateWhatAnagram(str) ].push_back(str); 
		}
	}
	void ShowAnagram()
	{
		for(MALSI i = _anagramTable.begin() ; i != _anagramTable.end() ; ++i)
		{
			for(LSI j = (i->second).begin() ; j != (i->second).end(); ++j)
			{
				cout << *j << " ";
			}
			cout << endl;
		}
	}
};

int main()
{
	Anagram ana;
	ana.BoundAnagram("input.dat");
	ana.ShowAnagram();
	return 0;
}