extern "C" {
#include <cstdio>

namespace greeting {
	char *greeting;
	void setstr(char *), print(void);
};

void greeting::setstr(char *str)
{
	greeting::greeting = str;
}

void greeting::print(void)
{
	std::printf("%s", greeting::greeting);
}

void ns(char *fn, char *arg)
{
	if (fn == "setstr") {
		greeting::setstr(arg);
		return;
	}
	else if (fn == "print") {
		greeting::print();
		return;
	}
}
}