From 028561fc4f002695701cf99b063d368c8571e7ad Mon Sep 17 00:00:00 2001
From: Luke <luke.k.xu@hotmail.com>
Date: Fri, 1 Aug 2025 18:36:06 +0800
Subject: [PATCH] =?UTF-8?q?test:=20=E6=B7=BB=E5=8A=A0=20Demo19=20=E9=A1=B9?=
 =?UTF-8?q?=E7=9B=AE?=
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---
 playground/Demo/Demo19/Main.snow | 14 ++++++++++++++
 playground/Demo/Demo19/OS.snow   | 11 +++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 playground/Demo/Demo19/Main.snow
 create mode 100644 playground/Demo/Demo19/OS.snow

diff --git a/playground/Demo/Demo19/Main.snow b/playground/Demo/Demo19/Main.snow
new file mode 100644
index 0000000..046d496
--- /dev/null
+++ b/playground/Demo/Demo19/Main.snow
@@ -0,0 +1,14 @@
+module: Main
+    import: os
+    function: main
+        return_type: void
+        body:
+            declare cols: int = 2
+            declare matrix: int[] = [1, 2, 3, 4]
+
+            declare x: int = matrix[cols]
+
+            os.print(x)
+        end body
+    end function
+end module
diff --git a/playground/Demo/Demo19/OS.snow b/playground/Demo/Demo19/OS.snow
new file mode 100644
index 0000000..6026d43
--- /dev/null
+++ b/playground/Demo/Demo19/OS.snow
@@ -0,0 +1,11 @@
+module: os
+    import: os
+    function: print
+        parameter:
+            declare i1: int
+        return_type: void
+        body:
+            syscall("PRINT",i1)
+        end body
+    end function
+end module
\ No newline at end of file