initialised the module

go.mod

@@ -0,0 +1,3 @@
+module code.lab.cowley.tech/chris/greetings
+
+go 1.18

greetings.go

@@ -0,0 +1,10 @@
+package greetings
+
+import "fmt"
+
+// Hello returns a greeting for the named person.
+func Hello(name string) string {
+    // Return a greeting that embeds the name in a message.
+    message := fmt.Sprintf("Hi, %v. Welcome!", name)
+    return message
+}