From d23c3aa5c4e524520c8275c32016ef30fc68e983 Mon Sep 17 00:00:00 2001
From: Seb2869 <116349652+Seb2869@users.noreply.github.com>
Date: Thu, 16 Oct 2025 11:27:00 +0800
Subject: [PATCH] Add files via upload

---
 GreeterBase.sol | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 GreeterBase.sol

diff --git a/GreeterBase.sol b/GreeterBase.sol
new file mode 100644
index 0000000..003fb94
--- /dev/null
+++ b/GreeterBase.sol
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+contract GreeterBase {
+    string private _greeting;
+
+    event GreetingChanged(string oldGreeting, string newGreeting);
+
+    constructor(string memory initialGreeting) {
+        _greeting = initialGreeting;
+        emit GreetingChanged("", initialGreeting);
+    }
+
+    function greet() external view returns (string memory) {
+        return _greeting;
+    }
+
+    function setGreeting(string calldata newGreeting) external {
+        string memory old = _greeting;
+        _greeting = newGreeting;
+        emit GreetingChanged(old, newGreeting);
+    }
+}