C / C++ / MFC

#include "stdafx.h"
#include "FMatrix.h"

using namespace FastMath;
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	FMatrix *a=new FMatrix(5);
	cout << "A is a [" << a->GetRowCount() << "x" << a->GetColumnCount() << "] matrix." << endl;
	delete a;
	return 0;
}

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#ifdef FASTMATH_EXPORTS
#define FASTMATH_API __declspec(dllexport)
#else
#define FASTMATH_API __declspec(dllimport)
#endif

#pragma once
#include "StdAfx.h"

namespace FastMath
{
	class FASTMATH_API FMatrix
	{
	private:
		int rw,cl;
		double *val;
		FMatrix(void);
		FMatrix(unsigned int,bool);
		FMatrix(unsigned int,unsigned int,bool);
		void initMatrix(unsigned int,unsigned int,bool);
		void destroy(void);
	public:
		FMatrix(const FMatrix&); //copy constructor
		FMatrix(unsigned int);
		FMatrix(unsigned int,unsigned int);
		FMatrix(unsigned int,unsigned int,double**);
		~FMatrix(void);
		static FMatrix* CreateIdentity(unsigned int);
		static FMatrix* CreateFull(unsigned int,unsigned int,double);
		static FMatrix* CreateRandomIntMatrix(unsigned int,unsigned int,int,int); //for debug purposes
		static FMatrix* CreateRandomDblMatrix(unsigned int,unsigned int,double,double); //for debug purposes
		double GetItem(unsigned int,unsigned int) const;
		void SetItem(unsigned int,unsigned int,double);
		int GetRowCount() const;
		int GetColumnCount() const;
		static bool AreSameSize(const FMatrix&,const FMatrix&);

		//operators
		FMatrix& operator =(const FMatrix&);
		FMatrix& operator -() const;
		FMatrix& operator +(const FMatrix&) const;
		FMatrix& operator -(const FMatrix&) const;
		FMatrix& operator *(double) const;
		FMatrix& operator *(const FMatrix&) const;
		FMatrix& operator !() const;
		bool operator ==(const FMatrix&) const;
		bool operator !=(const FMatrix&) const;
	};
}

#include "StdAfx.h"
#include "FMatrix.h"
#include "time.h"
#include <cstdlib>
#include <iostream>

using namespace FastMath;
using namespace std;

//-------------------------------------------------------------------------------------------------------------
//CONSTRUCTORS AND DESTRUCTOR----------------------------------------------------------------------------------
void FMatrix::initMatrix(unsigned int r,unsigned int c, bool initValues)
{
	rw=r;
	cl=c;
	val=new double[rw*cl];

#ifdef _DEBUG
	cout <<"++ Matrix created." << endl;
#endif

	if (initValues)
	{
		for (int i=0;i<rw;i++)
		{
			for (int j=0;j<cl;j++)
				*(val+i*cl+j)=0;
		}
	}
}

FMatrix::FMatrix(unsigned int dim)
{
	initMatrix(dim,dim,true);
}

FMatrix::~FMatrix()
{
	destroy();
}

void FMatrix::destroy()
{
	delete[] val;
        val=NULL;
#ifdef _DEBUG
	cout << "-- Matrix destroyed." << endl;
#endif
}

<br />
CoInitialize(NULL);<br />
try<br />
{<br />
_RecordsetPtr pGetInfo("ADODB.Recordset");<br />
_bstr_t strMyDB("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=FinalDB.mdb");<br />
pGetInfo->Open("SELECT * FROM [Video];", strMyDB, adOpenKeyset, adLockOptimistic, adCmdText);<br />
	pGetInfo->MoveFirst();<br />
	while (!pGetInfo->EndOfFile)<br />
	{<br />
	sID = (char*) ( (_bstr_t) pGetInfo->GetFields()->GetItem("Vid_ID")->GetValue() );<br />
	sTitle = (char*) ( (_bstr_t) pGetInfo->GetFields()->GetItem("Vid_Title")->GetValue() );<br />
	sFormat = (char*) ( (_bstr_t) pGetInfo->GetFields()->GetItem("Vid_Format")->GetValue() );<br />
//... the two pieces of info will read just like the above three lines<br />
pGetInfo->MoveNext();<br />
	iIndex++;<br />
        }<br />
	pGetInfo->Close();<br />
}

<br />
iVidTotal = itoa(sAmount); // string sAmount<br />
iAvailable= itoa(sAvailable); //string sAvailable<br />