diff --git a/21.StatePattern/2.Code/main.cpp b/21.StatePattern/2.Code/main.cpp
index 99b8e48..cfbcfc4 100644
--- a/21.StatePattern/2.Code/main.cpp
+++ b/21.StatePattern/2.Code/main.cpp
@@ -6,11 +6,14 @@ int main()
 	GameAccount *jungle = new GameAccount("Jungle");
 
 	for (int i = 0; i < 5; i++){
-		printf("第%d局：\n", i + 1);
+		printf("%d \n", i + 1);
 		jungle->playCard();
 	}
 
 	printf("\n\n");
 	system("pause");
+
+	delete jungle;
+	
 	return 0;
 }
\ No newline at end of file
diff --git a/22.StrategyPattern/2.Code/main.cpp b/22.StrategyPattern/2.Code/main.cpp
index 01f3bfd..e41924a 100644
--- a/22.StrategyPattern/2.Code/main.cpp
+++ b/22.StrategyPattern/2.Code/main.cpp
@@ -7,22 +7,25 @@ int main()
 	Context* ctx = new Context();
 	int arr[] = { 10, 23, -1, 0, 300, 87, 28, 77, -32, 2 };
 	ctx->setInput(arr, sizeof(arr)/sizeof(int));
-	printf("输入：");
+	printf("input:");
 	ctx->print();
 
-	// 冒泡排序
+	// BubbleSort
 	ctx->setSortStrategy(new BubbleSort());
 	ctx->sort();
 
-	// 选择排序
+	// SelectionSort
 	ctx->setSortStrategy(new SelectionSort());
 	ctx->sort();
 
-	// 插入排序
+	// InsertSort
 	ctx->setSortStrategy(new InsertSort());
 	ctx->sort();
 
 	printf("\n\n");
 	system("pause");
+
+	delete ctx;
+
 	return 0;
 }
\ No newline at end of file
diff --git a/23.TemplateMethodPattern/2.Code/main.cpp b/23.TemplateMethodPattern/2.Code/main.cpp
index ffca5f3..9900170 100644
--- a/23.TemplateMethodPattern/2.Code/main.cpp
+++ b/23.TemplateMethodPattern/2.Code/main.cpp
@@ -5,15 +5,18 @@ int main()
 {
 	FingerprintModule *fp = new FingerprintModuleA();
 	fp->algorithm();
+	delete fp;
 
 	fp = new FingerprintModuleB();
 	fp->algorithm();
+	delete fp;
 
 	fp = new FingerprintModuleC();
 	fp->algorithm();
-
+	delete fp;
 
 	printf("\n\n");
 	system("pause");
+
 	return 0;
 }
\ No newline at end of file
diff --git a/24.VisitorPattern/2.Code/main.cpp b/24.VisitorPattern/2.Code/main.cpp
index c0abea7..605c221 100644
--- a/24.VisitorPattern/2.Code/main.cpp
+++ b/24.VisitorPattern/2.Code/main.cpp
@@ -29,8 +29,16 @@ int main()
 	printf("\n\n");
 	shoppingCart->accept(cashier);
 
-
 	printf("\n\n");
 	system("pause");
+
+	delete apple1;
+	delete apple2;
+	delete book1;
+	delete book2;
+	delete cashier;
+	delete jungle;
+	delete shoppingCart;
+
 	return 0;
 }
\ No newline at end of file