Implemented reading from struct fields

examples/point/point.q

@@ -1,3 +1,6 @@
+import mem
+import sys
+
 struct Point {
 	x Int
 	y Int
@@ -5,7 +8,20 @@ struct Point {
 
 main() {
 	p := new(Point)
-	p.x = 4
+	p.x = 1
 	p.y = 2
+
+	out := mem.alloc(8)
+	out[0] = 'x'
+	out[1] = ' '
+	out[2] = '0' + p.x
+	out[3] = '\n'
+	out[4] = 'y'
+	out[5] = ' '
+	out[6] = '0' + p.y
+	out[7] = '\n'
+	sys.write(1, out, 8)
+	mem.free(out)
+
 	delete(p)
 }