void addTranscation(unsigned senderId,unsigned receiverId,double fmiCoins)
{
	Wallet sender;
	Wallet receiver;
	Transaction trans;

	trans.senderId = senderId;
	trans.receiverId = receiverId;
	trans.fmiCoins = fmiCoins;
	trans.time = time(NULL);

	fstream myTransactions;
	myTransactions.open(transactionsDirectory, ios::out | ios::app | ios::binary);
	myTransactions.write((const char*)&trans, sizeof(Transaction));
	myTransactions.close();

	fstream myWallet;
	myWallet.open(walletsDirectory, ios::in | ios::out | ios::binary);

	myWallet.seekg((senderId - 1) * sizeof(Wallet), ios::beg);
	myWallet.read((char*)&sender,sizeof(Wallet));
	sender.fiatMoney += 375 * fmiCoins;
	myWallet.seekp((senderId - 1) * sizeof(Wallet), ios::beg);
	myWallet.write((const char*)&sender, sizeof(Wallet));

	myWallet.seekg((receiverId - 1) * sizeof(Wallet), ios::beg);
	receiver.fiatMoney -= 375 * fmiCoins;
	myWallet.seekp((senderId - 1) * sizeof(Wallet), ios::beg);
	myWallet.write((const char*)&receiver, sizeof(Wallet));

	myWallet.close();
}