add function eg

Author: hegdeashwin

codes/ch2_functions/.gitkeep

@@ -0,0 +1,31 @@
+package main
+
+import "fmt"
+
+/**
+ * User defined type Profile act as struct type
+ */
+type Profile struct {
+	name string
+	username string
+	message string
+}
+
+/**
+ * Define a Greeting function;
+ */
+func Greeting(github Profile) {
+	fmt.Println("Name: ", github.name)
+	fmt.Println("Username: ", github.username)
+	fmt.Println("Message: ", github.message)
+}
+
+func main() {
+
+	var github = Profile{"Ashwin Hegde", "hegdeashwin", "Welcome to Go world!"}
+
+	/**
+	 * Call the function and pass the data to the function
+	 */
+	Greeting(github)
+}