#include<iostream>
using namespace std;

const int MATRIX_SIZE = 4;
const int MATRIX_COUNT = 25;

void getInititalMatrices(int matrices[][MATRIX_SIZE][MATRIX_SIZE], int& matricesUsed)
{
	int initialMatrices;

	do
	{
		cout << "How many initial matrices?";
		cin >> initialMatrices;
	}
	while(initialMatrices < 1 || initialMatrices > MATRIX_COUNT);


	while(matricesUsed < initialMatrices)
	{
		cout << "Enter matrix " << matricesUsed + 1 << endl;
		for(int row = 0; row < MATRIX_SIZE; row++)
		{
			cout << "  Row " << row + 1 << "? ";
			for(int column = 0; column < MATRIX_SIZE; column++)
			{
				cin >> matrices[matricesUsed][row][column];
			}
		}
		matricesUsed++;
		cout << endl;
	}

}

void getOperation(char& operation, int matricesUsed)
{
	bool validOperation = false;

	do
	{
		cout << "Operation? ";
		cin >> operation;

		if( matricesUsed < MATRIX_COUNT)
		{
			if(operation == 'Q' || operation == 'q' ||
				operation == 'T' || operation == 't' ||
				operation == '+' || operation == '-' ||
				operation == 'D' || operation == 'd' ||
				operation == 'x' || operation == 'X' ||
				operation == '*' )
			{
				validOperation = true;
			}
			else
			{
				cout << "Invalid Operation...\n";
			}
		}
		else
		{
			if(operation == 'Q' || operation == 'q' ||
				operation == 'D' || operation == 'd')
			{
				validOperation = true;
			}
			else
			{
				cout << "Invalid Operation, there is not room for more results...\n";
			}
		}
	}
	while(! validOperation);
}

void main()
{
	int matrices[MATRIX_COUNT][MATRIX_SIZE][MATRIX_SIZE];
	int matricesUsed = 0;
	char operation;

	getInititalMatrices(matrices, matricesUsed);

	getOperation(operation, matricesUsed);

	//do the operation

	//display the new matrix
	//go back and get the next operation

}