#define MAX_PLAYER_SLOTS 12
#define MAX_PLAYER_NAME 25

struct PlayerData
{
  DWORD dwPlayerID;
  DWORD dwStormID;
  BYTE  nType;
  BYTE  nRace;
  BYTE  nTeam;
  char  szName[MAX_PLAYER_NAME];
} gPlayerData[MAX_PLAYER_SLOTS];   // loaded with nType (Owner), nRace, and nTeam (Force)
// Note: This is Starcraft's structure and you don't need to use it unless you actually want to verify the VCOD section.

// -- above this line are official names given by Blizzard Entertainment --

DWORD vcod[256]; // loaded with default VCOD
bool vcodUsed[256]; // uninitialized

// SOME FUNCTION
{
// initialize to false
for (int i = 0; i < 256; i++)
  vcodUsed[i] = false;

// always use index 0
vcodUsed[0] = true;

// use index at Type, Race, and Force
for (int i = 0; i < MAX_PLAYER_SLOTS; i++)
{
  vcodUsed[gPlayerData[i].nType] = true;
  vcodUsed[gPlayerData[i].nRace] = true;
  vcodUsed[gPlayerData[i].nTeam] = true;
}

// Set unused sections of VCOD to 0
for (int i = 0; i < 256; i++)
{
  if ( !vcodUsed[i] )
    vcod[i] = 0;
}

// continue doing whatever it is you want (write finished VCOD to file, etc)
}