C / C++ / MFC

int x = (rand() % 100) + 1;

"The man who reads nothing is better educated than the man who reads nothing but newspapers."- Thomas Jefferson

// room for 100 listbox items of MAX_PATH length
char array[100][MAX_PATH];

void AddListBoxContentsToStringArray(HWND hWnd)
{
    char szText[MAX_PATH];

    //get number of files in List Box:
    int filecount = SendDlgItemMessage(hWnd, IDC_FILES, LB_GETCOUNT, 0, 0);

    for (int currfile = 0; currfile < filecount; currfile++)
    {
        SendDlgItemMessage(hWnd, IDC_FILES, LB_GETTEXT, currfile, (LPARAM) szText);
        strcpy(array[currfile], szText);
    }
}

#define OPTION_A
//#define OPTION_B -- this is turned off since it is commented out
  
// then later in your code perhaps something like this
    
#ifdef OPTION_A
  // do option A here
#endif
  
#ifdef OPTION_B
  // do option B here
#endif

#define OPTION_A 0
#define OPTION_B 1
  
#define DEFAULT_OPTION OPTION_A
  
int nOption = DEFAULT_OPTION;
  
// then later in your code perhaps something like this
  
switch( nOption )
{
    case OPTION_A:
    {
        // do option A here  
    }
    break;
  
    case OPTION_B:
    {
        // do option B here  
    }
    break;
}

if( "1" == "1" )
{
   ...
   "1" = "0";
}

#define YES 1
#define NO 0
  
int StartYourEngines = YES;
  
if( StartYourEngines == YES )
{
   ...
   StartYourEngines = NO;
}

int StartYourEngines = 1;
  
if( StartYourEngines == 1 )
{
   ...
   StartYourEngines = 0;
}