#include <iostream>
using namespace std;

void NewIf(bool var,void (*func)())
{
if (var)
{
func();
}
}
int main()
{
NewIf(0,[]{cout << "Hello world!" << endl;});
NewIf(11,[]{cout << "Hello world!" << endl;});
NewIf(11,[]{cout << "Hello world!" << endl;});
NewIf(11,[]{cout << "Hello world!" << endl;});
NewIf(11,[]{cout << "Hello world!" << endl;});
return 0;
}