test21
auto test21 = 
q{--- test21
	// test fibonacci. while loop. func call
	@extern(module, "host")
	void print(i32); // external
	void fibonacci() {
		i32 lo = 0;
		i32 hi = 1;
		while (hi < 10000) {
			hi = hi + lo;
			lo = hi - lo;
			print(lo);
		}
	}
};
  
		tests passing 
		functionsvariables