Renew greeting

Author: DataEraserC

rust/greeting/src/main.rs

@@ -1,3 +1,13 @@
+fn greet_world() {
+    let southern_germany = "Grüß Gott!";
+    let chinese = "世界，你好";
+    let english = "World, hello";
+    let regions = [southern_germany, chinese, english];
+    for region in regions.iter() {
+        println!("{}", &region);
+    }
+}
+
 fn main() {
-    println!("Hello, world!");
+    greet_world();
 }