From 9aa5bdb7672b174ebb8b11e3783c164fb443fc69 Mon Sep 17 00:00:00 2001
From: ParkMoonJ <parkmoonj.9911@gmail.com>
Date: Fri, 9 Apr 2021 14:41:54 +0800
Subject: [PATCH] Update stack.cpp

---
 3 栈和队列/stack.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/3 栈和队列/stack.cpp b/3 栈和队列/stack.cpp
index 31bacc9..622b035 100644
--- a/3 栈和队列/stack.cpp	
+++ b/3 栈和队列/stack.cpp	
@@ -19,7 +19,11 @@ void ClearStack(Stack &S) {
 }
 
 bool StackEmpty(Stack S) {
-    return !(S.top + 1);
+    if (S.top == -1) {
+        return true;
+    } else {
+        return false;
+    }
 }
 
 int StackLength(Stack S) {