[Valmont]

This is how you could set up a basic matrix. Observe the very details!

#include <iostream>

using namespace std;

//--

int main()
{
  int** Matrix;
  unsigned nRows(3);
  unsigned nCols(4);
  
  Matrix = new int*[nRows];
  
  if (Matrix != 0) 
  { 
    for(unsigned i = 0; i < nRows; ++i) 
    { 
      Matrix[i] = new int[nCols]; 
    }
  }
  
  //Let's see how we delete them. Watch closely.
  for(unsigned i = 0; i < nRows; ++i) 
  { 
    delete[] Matrix[i]; 
  } 
  delete[] Matrix;
  
  return 0;
}