From a02686b8c3f25e3ac0c60f5e506a674e720e420e Mon Sep 17 00:00:00 2001
From: Prathamesh Patil <patilprathameshr@gmail.com>
Date: Mon, 23 Jan 2023 15:37:34 +0530
Subject: [PATCH 1/3] modified some data

---
 c++2.0/c++11/nullptr.cpp | 2 +-
 effective_c++/2.cpp      | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/c++2.0/c++11/nullptr.cpp b/c++2.0/c++11/nullptr.cpp
index 8fa9a7f..a4a7822 100644
--- a/c++2.0/c++11/nullptr.cpp
+++ b/c++2.0/c++11/nullptr.cpp
@@ -22,7 +22,7 @@ int main() {
 
     //  c语言中将NULL定义为空指针，而在c++中直接定义为0，这是因为C++是强类型的，void *是不能隐式转换成其他指针类型的。
 
-    if(NULL==0)  cout<<"NULL==0"<<endl;
+    if(NULL)  cout<<"NULL==0"<<endl;
     // f(NULL); // ambiguous,因为NULL==0所以存在二义性 指针也可以是个int的地址
     // c++11 空指针nullptr
     f(nullptr); //typedef decltype(nullptr)	nullptr_t;
diff --git a/effective_c++/2.cpp b/effective_c++/2.cpp
index 428f3b1..b1de41d 100644
--- a/effective_c++/2.cpp
+++ b/effective_c++/2.cpp
@@ -33,10 +33,10 @@ int main() {
     cout << C::NUM1 << endl;
 //    cout << &C:NUM1 << endl;  //error enum no address
 
-    int a=5, b=0;
+    int a=10, b=5;
     cout<<MAX(++a, b)<<endl;              // a被增加两次
     cout<<MAX(++a, b+10)<<endl;           // a被累加一次
-    a=5,b=0;
+    a=10,b=5;
     cout<<Max(++a,b)<<endl;
 }
 

From 6eba7d5e6a7a5d74b0917b97b2818fefff8a2a5b Mon Sep 17 00:00:00 2001
From: Prathamesh Patil <patilprathameshr@gmail.com>
Date: Mon, 23 Jan 2023 15:40:21 +0530
Subject: [PATCH 2/3] modified header file

---
 c++2.0/c++11/nullptr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c++2.0/c++11/nullptr.cpp b/c++2.0/c++11/nullptr.cpp
index a4a7822..5e36c24 100644
--- a/c++2.0/c++11/nullptr.cpp
+++ b/c++2.0/c++11/nullptr.cpp
@@ -2,7 +2,7 @@
 // Created by light on 19-11-2.
 //
 
-#include <iostream>
+#include <bits/stdc++.h>
 using namespace std;
 
 void f(int i) {

From 43f47a8ddc478db59008c855ff5db0ba47d0d4bc Mon Sep 17 00:00:00 2001
From: Prathamesh Patil <patilprathameshr@gmail.com>
Date: Mon, 23 Jan 2023 15:51:30 +0530
Subject: [PATCH 3/3] modified another file

---
 c++2.0/c++11/auto.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c++2.0/c++11/auto.cpp b/c++2.0/c++11/auto.cpp
index bfad975..7c8742a 100644
--- a/c++2.0/c++11/auto.cpp
+++ b/c++2.0/c++11/auto.cpp
@@ -2,7 +2,7 @@
 // Created by light on 19-11-2.
 //
 
-#include <iostream>
+#include <bits/stdc++.h>
 #include <list>
 #include <algorithm>
 #include <vector>