C / C++ / MFC

string input;
int number;
cin >> input;
int pos = input.find(',');
while (pos != -1)
{
    input.replace(pos, 1, "");
    pos = input.find(',');
}

number = atoi(input.c_str());

cout << number << endl;

class Item
{
};

typedef void (*VisitFunc)( Item & item );

void InOrder( VisitFunc f )
{
//stuff
}

//extended BSTree class

void VisitingSortFunction(Item & item)
{
//stuff that i want to be executed in InOrder(
}

void SortTree()
{
   InOrder(VisitingSortFunction);
}

int main(int argc, char* argv[])
{
	return 0;
}

class BSTree
{
   public:
   void InOrder( VisitFunc f)
   {}
};

class BSTreeExtendedWithSort : public BSTree
{
public:
   static void VisitingSortFunction(Item & item)
   {}

   void SortTree()
   {
      InOrder(VisitingSortFunction);
   }

private:
};

typedef void (*<font color=red>BSTreeExtendedWithSort::</font>VisitFunc)(Item& item);

CString str,fmt;
CStringArray arr;
fmt = _T("%s blah %s blah ... %s blah");
str.Format(fmt,arr[0],arr[1],...,arr[]);

CString str,fmt;
CStringArray arr;
fmt = _T("%s blah %s blah ... %s blah");
str = fmt;
int offset = str.Find(_T("%s"));
int index = 0;
while ((offset >= 0) && (index < arr.GetSize())) {
    str = str.Left(offset) + arr[index++] + str.Mid(offset+2);
    offset = str.Find(_T("%s"),(offset+2));
}