implement Sample;include "sys.m";	sys: Sys; Sample: module{	init: fn();}; init(){	sys = load Sys Sys->PATH;	a : string;	b := "yes"; 	b[1] = 'E';	sys->print("should print yEs result %s\n", b);	a[0] = 112;	sys->print("should print p result %s\n", a);	a[0] = 'h';	a[len a] = 'e';	a[len a] = 'l';	a[len a] = 'l';	a[len a] = 'o';	sys->print("should print hello result %s\n", a);	c := int "65";	sys->print("should print 65 result %d\n", c);	h := "Hello";	w := "World";	g := h + " " + w + " " + "!";	sys->print("should print Hello World ! result %s\n", g);}