C / C++ / MFC

Calin Negru wrote:

Is that how it works?

struct S {
   /* .. member declarations */
};

unit* LUnits = new unit[2];

LUnits[0] = dynamic_cast<unit*>(S);

unit** LUnits = new unit*[2];

unit** LUnits = new units*[2];  // create an array of pointers to unit
soldier* S = new soldier;
unit[0] = S; // nb we don't need to down cast from soldier to unit

// original class
class C1 {
   int i;
   double d;
public:
   C1(int x, double y) : i(x), d(y) {}
   ...
}; 

// new class :
class C2 {
  int i;
  double d;
  std::string str; // <<= "addition" to C1
public:
  C2(int x, double y, std::string s) : i(x), d(y), str(s){}
  ...
};

// original class
class C1 {
   int i;
   double d;
public:
   C1(int x, double y) : i(x), d(y) {}
   ...
}; 

// new class :
class C2 : public C1 {
  std::string str; // <<= "addition" to C1
public:
  C2(int x, double y, std::string z) :
     C1(x, y), // instantiate the C1 portion of C2
     str(z)    // instantiate new object of C2
  {}
  // add any new functionality needed for a C2 object
};

jana_hus wrote:

immature flaming responses will be as always ignored.

Alex D Aug2024 wrote:

* BIOS registers for graphics modes and other useful things

"BIOS" "graphics modes" PC-dos

Alex D Aug2024 wrote:

Methods to incorporate these registers in C with methods aka inline assembler