How to do pointer lookup by value?

Question

C++ / C#

Can you tell me how to write code that will produce a pointer (pointers) that contain a value (like in a cheat engine)?

int GetPtr(HANDLE &_hProc, int pid, const char[] text) {
  
  .... // поиск 
    if (...) // найдены значений
    {
      cout << ptr; // вывод указателя

    }
    else return 0;

  return 1;
}

void main()
{
  HANDLE  _hProc = OpenProcess(PROCESS_ALL_ACCES, NULL, _pID);

  GetPtr(_hProc, _pID,"Text");
}