diff --git a/13_functions/init.v b/13_functions/init.v
new file mode 100644
index 0000000..555a869
--- /dev/null
+++ b/13_functions/init.v
@@ -0,0 +1,9 @@
+
+// init() can not be pub
+fn init(){
+	println('oi')
+}
+
+pub fn main(){
+	init()
+}
\ No newline at end of file
diff --git a/14_constants/constants.v b/14_constants/constants.v
new file mode 100644
index 0000000..9c7d7e7
--- /dev/null
+++ b/14_constants/constants.v
@@ -0,0 +1,39 @@
+
+const pi    = 3.14
+const e     = 2.71828
+const world = '世界'
+
+struct Color{
+	r int
+	g int
+	b int
+}
+
+fn rgb(r int, g int, b int) Color
+{
+	return Color{
+		r: r
+		g: g
+		b: b
+	}
+}
+
+const numbers = [1,2,3]
+const red = Color{
+	r: 255
+	g: 0
+	b: 0
+}
+
+const blue = rgb(0,0, 255)
+
+pub fn main(){
+
+	println(pi)
+	println(world)
+
+	println(numbers)
+	println(red)
+	println(blue)
+
+}
\ No newline at end of file
diff --git a/14_constants/module.v b/14_constants/module.v
new file mode 100644
index 0000000..24b3e2b
--- /dev/null
+++ b/14_constants/module.v
@@ -0,0 +1,7 @@
+module mymodule
+
+pub const golden_ratio = 1.61803
+
+fn calc(){
+	println(mymodule.golden_ratio)
+}