A simple example to show cpp to my friends ;-)

hello.cpp

#include <iostream>

template <typename MsgType>
class Greeting {
private:
  MsgType m_pre;
  MsgType m_post;

public:
  Greeting(MsgType pre)
    : m_pre(pre) {}
  Greeting(MsgType pre, MsgType post)
    : m_pre(pre), m_post(post) {}

  void hello(MsgType name) {
    std::cout << m_pre << name;
    if(m_post != NULL) std::cout << m_post;
    std::cout << std::endl;
  }
};

int main(int argc, char* argv[]) {
  Greeting<const char*> foo("Hallo ");
  foo.hello("Ruben");
  Greeting<const char*> bar("Hey", ", was geht ab?");
  bar.hello("Vincent");
  return 0;
}