C / C++ / MFC

<br />
dat_file.write(person.FullName, sizeof(char)*NAME_SIZE);<br />
dat_file.write((char*) &person.Age, sizeof(int));<br />

<br />
dat_file.read(person.FullName, sizeof(char)*NAME_SIZE);<br />
dat_file.read((char*) &person.Age, sizeof(int));<br />

long getFileSize(fstream * tempFile)<br />
{<br />
	long begin, end;<br />
	begin = tempFile->tellg();<br />
	tempFile->seekg (0, ios::end);<br />
	end = tempFile->tellg();<br />
	return end-begin;<br />
}

long getFileSize(fstream * tempFile)
{
    long begin, end;
    begin = tempFile->tellg(); // save current position
    tempFile->seekg (0, ios::end);
    end = tempFile->tellg(); // get eof position
    tempFile->seekg (begin); // restore saved position
    return end;
}

// ***************************************
// Example: Dynamic Multidimensional Array
// ***************************************

// We want both array dimensions to be allocated dynamically and
// to be able to reference an element as x[i][j]
// Here's how to do it...

// ***********
// MFC Version
// ***********

// Array of ints
typedef CArray <int, int> CIntArray;

// Array of arrays of ints
typedef CArray <CIntArray, CIntArray&> CMultiIntArray;

void TraceDynamicArray(const unsigned int rows, const unsigned int columns)
{
  CMultiIntArray aTest;
  

 // Allocate number of rows
  aTest.SetSize( rows );
  

 // For each row
  for (int row = 0; row < aTest.GetSize(); row++)
  {
    // Allocate number of columns
    aTest[row].SetSize( columns );
    

   // For each column
    for (int column = 0; column < aTest[row].GetSize(); column++)
    {
      // Assign a value
      aTest [row] [column] = 10 * row + column;
      

     // Trace it
      afxDump << aTest [row] [column] << "\t";
    }

   afxDump << "\n";
  }
}

CArray<CArray<int>> array;
array.SetSize(number_of_rows);
for (int row = 0; row < number_of_rows; row++) {
  array[row].SetSize(number_of_columns);
}
//...
for (int row = 0; row < array.GetSize(); row++) {
  for (int col = 0; col < array[row].GetSize(); col++) {
    array[row][col] = 0; //...
  }
}

Healdp wrote:

Detecting the presence of a valid connection seems to be **** HARD !

Healdp wrote:

The solution you suggest is the solution I have tried, it is from CodeGuru