#include <iostream> 
#include <cstdlib> 

#define DEBUG 

int main() 
{ 
  char buffer[20]; 
  int number; 

  std::cout << "Geben Sie eine Zahl ein: " << std::flush; 
  std::cin.get(buffer, sizeof(buffer)); 
#ifdef DEBUG 
  std::cout << "DEBUG: " << buffer << std::endl; 
#endif 
  number = std::atoi(buffer); 
#ifdef DEBUG 
  std::cout << "DEBUG: " << number << std::endl; 
#endif 
}