Managed C++/CLI

toxcct wrote:

and at last, if your class exist only for such things, prefer using a struct instead...

<br />
void main (void)<br />
{<br />
 float **f;<br />
 A id;<br />
 f = id.GetData ();<br />
<br />
 cout << f[0][0] << endl;<br />
}<br />

class A<br />
{<br />
protected:<br />
   float** data;<br />
}

A::A()<br />
{<br />
   data = new float[4];<br />
   for(int i=0;i<4;i++)<br />
      data[i] = new float[4];<br />
}

A::~A()<br />
{<br />
   if (data)<br />
   {<br />
       for (int i=0;i<4;i++)<br />
       {<br />
          if (data[i])<br />
             delete[] data[i];<br />
       }<br />
<br />
   delete[] data;<br />
   }<br />
}

#include <iostream>

class A
{
public:
	A(){ for( int i = 0; i < 4; i++ ) for( int j = 0; j < 4; j++ ) data[ i ][ j ] = 0; }
	float** GetData()
	{
		float **g = new float*[ 4 ];
		for( int i = 0; i < 4; i++ )
			g[ i ] = data[ i ];
		return g;
	}
protected:
	float data[ 4 ][ 4 ];
};

using namespace std;

int main( int nargs, char * cargs[] )
{
	A id;
	float** f = id.GetData();
	cout << f[ 0 ][ 0 ] << endl;
	delete [] f;
	return 0;
}

float **f;
A id;
f = id.GetData();
for(int i=0; i<4; i++)
{
	for(int j=0; j<4; j++)
	{
		cout << *((float*)f + i*4 + j) << " ";
	}
	cout << endl;
}

#include <stdio.h>

typedef float FixedFloatArray[4][4];

class A
{
public:
    A()
    {
        for(int i = 0; i < 4; ++i)
        {
            for (int j = 0; j < 4; ++j)
            {
                data[i][j] = (float)(i * 4 * j);
            }
        }
    }

    FixedFloatArray* GetData() { return &data; }
protected:
FixedFloatArray data;

};

void main()
{
    A foo;
    FixedFloatArray* data = foo.GetData();
    printf("%f\n", (*data)[1][1]);
}

class A
{
float* operator[](int row)
{
return data[row];
}
};

void main()
{
  A foo;
  printf("%f\n", foo[1][1]);
}