Variadic templates example: sizeof for parameter pack

cpp-variadic-c.cpp

#include <iostream>

using namespace std;

void sayIt() {
    // Does nothing
}

template <typename T, typename... Ts>
void sayIt(T t, Ts... ts) {
  cout << t;
  if (sizeof...(ts))
    cout << " (" << sizeof...(ts) << " more messages)";
  cout << endl;
  sayIt(ts...);
}

int main() {
  cout << "Example 3: Output" << endl;
  sayIt("Message 1", "Message 2", "Message 3", "Message 4");
  return 0; 
}