Dealing with multiple swift files : hello.swift and world.swift

1_single_executable/CMakeLists.txt

@@ -9,4 +9,4 @@ cmake_minimum_required(VERSION 3.22)
 
 project(hello LANGUAGES Swift)
 
-add_executable(hello hello.swift)
+add_executable(hello main.swift world.swift)

1_single_executable/hello.swift → 1_single_executable/main.swift

@@ -9,4 +9,5 @@
 //
 //===----------------------------------------------------------------------===//
 
-print("Hello, world!")
+
+print("Hello, \(world())!")

1_single_executable/world.swift

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2023 Apple Inc. and the Swift project authors.
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+//
+//===----------------------------------------------------------------------===//
+
+func world() -> String
+{
+ return "world"
+}
+