#include <iostream>

using namespace std;

​

int main() {

  string myStr = "Hello World!";

  bool myBool = false;

  int myInt = 50;

  float myFloat = 19.99;

​

  cout << myStr << "\n";

  cout << myBool << "\n";

  cout << myInt << "\n";

  cout << myFloat << "\n";

  return 0;

}

​